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gl2400_003-243_stereo_input_1.1


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                                                                                                                                                                                          +VA
                                                                                                                                                                                                                                                                                                                                                                                                  R64          MIXL
                                                        SW1B                                                          +VA
                                        48V                                                                                                                                                                                                                                                                                                                                                       12K 1% 0805
                                                                                                                                                                                                                                                                                                                                                                            SW2A




                                                                                                                                                                                          8
                                                    SW2PCOL (SPUN)
                                                     6                                                                                                                                U12C                                                                                                                                                                                 SW4PCOL (SPUJ)
                                                                                                                                                                                                                                                                                                                               C31
               1

                       3
                                                                5                                                                                                                                                                                                                                     R1                                                               3




                                                                                                                                                                                           V- V+
                                                     4                                  R127                                                                                                                                                                                                     2K2 1% 0805                                                                          2
                        SW1A                                                4K7 1% 0805 MELF                                                       R128                                                                                                                                                                                                                                                                    C32
                                                                                                        C62                                                                                                                                                                                                                                                            1




                                                                                                                        2
                        SW2PCOL (SPUN)                                                                                                            4K7 1% 0805 MELF                                                                                                                                                             33P 0805
                                                                                                       330/10                                                                                                                                                                                                                                                                                       R149
                                                                                                                1                 3 R134                                                                                                                                                                                      R14
                                                                                                                                                                                                  TL072D SMD                                                       C1                                                                                                                               5K6 0805            33P 0805
                                                                                -VA
                   2



                                                                   D4                                                            4R7 0805                                                                                                     ST1(3)_IN_L+                                                                    12K 1% 0805




                                                                                                                                                                                          4
                                                                                          Q1                          VR0A                                                                                                                                                                                                                                                           SW2C                              R18
                                                                 BAS16                                                POT11 10KZ                          Q2
                                      C8                                                2N4403                                                                                                                                                                                                                                                                         9            SW4PCOL (SPUJ)
                                                                                                                                                          2N4403                                                                                                   47/25                                                                                                                                               10K 1% 0805




                                                                                                                                                                                                                                                                                           6
      MIC+                                                                                                                                                                                -VA                                                                                                                             6                       C2                                  8
                                                                                                                                                                                                                                                                                                                                             7                         7                          R16
                                                                                                                                                                                                                                                                                                                                                                                               10K 1% 0805
                                     47/63                                  C60         R94                                                                                                                                                                                                            4                  5                                                                                        2
                                 R17                                                    47K 0805                                                                                  C63                                                                                        VR1A                                                                 47/25
                                                                         100P_S                                                                                                                                                                                                                                                                            R46                                                                          1                    EQ_INL
                                                                                                                                                                                33P 0805                                                                                                                                       U1B




                                                                                                                                                  820R 1% MELF
e                                6K8 1% 0805 MELF                                                              Q3                                                                                                                                                       POT14 20KK X2                           R13                                                                                                3
                                                                        C15                                                                                                                                                                                                                                                                                47K 0805
                                                R93                                                            BC848B         Q4                                                                                                                                                                                10K 1% 0805 TL072D SMD                                                            R15
                                           2K2 1% 0805                 1N0 0805                                             BC848B                                                                                                                                                                                                                                                  ST2_LSUM
                                                                                                                                                                                                                                                                                                                                                                                                                           U2A




                                                                                                                                                                                                                                                                                           1
                                                                                                 R132                                      R133                                    R129                                                                                                                                                                                                        10K 1% 0805             TL072D SMD
                                 R24                                       C20
                                                                                        R102     820R 1% MELF
                                 6K8 1% 0805 MELF                        100P_S                                                                                                4K7 1% 0805 MELF                                                                                                                                                                                                   R138
                                                                                        47K 0805
      MIC-
                                                                                                                                                                           6                                   C65                                                                                                                                                                                10K 1% 0805
                                   C3       47/63                                                                                                                                                   7
                                                                               D5                                                                                          5
                                                                               BAS16                                                                                                                                                                                                                                                                                        SW2B
                                                                                                                                                                                         U12B                  47/25                                                                                                                                                                                         R65
                                                                                                                                                                                                                                                                                                                               C34                                         SW4PCOL (SPUJ)                                        MIXR
                                                                                                                                                                                      TL072D SMD
                                                                                                                                                                                                                                                                                                                                                                       6                                     12K 1% 0805
                                                                         -VA                                                                                                                                                                                                                           R4
                                                                                                R141                       R142                                                                                                                                                                                                                                                       5
                                                                                                                                                                      R131                                                                                                                                                                                                                                                 C36
                                                                                      1K2 1% 0805 MELF           1K2 1% 0805 MELF               C64                                                                                                                                                    2K2 1% 0805             33P 0805                                4
                                                                                                                                                                      4K7 1% 0805 MELF
                                                                                                                                              33P 0805                                                        R126                                                                                                             R21                                                                  R150
                                                                                                                                                                                                                                                                   C6                                                                                                                                                   33P 0805
                                                                                                                                                                                                              47K 0805                       ST1(3)_IN_R+                                                                      12K 1% 0805                                                          5K6 0805           R25
                                                                                                                      -VA                                                                                                                                                                                                                                                          SW2D
                                                                                                                                                                                                                                                                   47/25                                                      U1A                                     12         SW4PCOL (SPUJ)                        10K 1% 0805




                                                                                                                                                                                                                                                                                           5
                                                        R140                                                                                                                                                                                                                                                              2                       C7                                11
d                                                                                                                                                                                                                                                                                                                                            1                        10                          R23
                                                      68R 0805                                                                                                                                                                                                                                                                                                                                  10K 1% 0805
             MIC_OUT+                                                                                                                                                                                                                                                         VR1B                     3                  3                                                                                        6
                                                                                                                                                                                                                                                                                                                                                  47/25    R50                                                                          7                EQ_INR
                                                                                                                                                                                                                                                                        POT14 20KK X2                          R20       TL072D SMD                                                                                5
                                                                                                                                                                                                                                                                                                                                                           47K 0805
                                                                                                                                                                                                                                                                                                               10K 1% 0805                                                                        R22
                                                                                                                                                                                                                                                                                                                                                                                     ST2_RSUM                               U2B




                                                                                                                                                                                                                                                                                           2
                                                                                                                                                                                                                                                                                                                                                                                               10K 1% 0805             TL072D SMD
                                                                            2
             MIC_OUT+_NML
                                                                                                   1
                                                                            3                                                                                                                                                                                                                                                                                                                     R139
                                                                                                                                                                                                                                                                                                                                                                                                  10K 1% 0805
                                                          R148
                                                          47K 0805                  U12A
                                                                                                                                                                                                    C33
                                                                                  TL072D SMD

                                                                                                                                                                                                    33P 0805                                                                                                               SW3A
                                                                                                                                                                                                                                                                        C35                                               SW4PCOL (SPUJ)
                                                                                                                                                                                                   R19                                                                                                                3
                                                                                                                                                                                                                                                                                                                                     2                      R136               MIXL
                                                                                                                                                                                                   10K 1% 0805
                                                                                                                                                       C11                                                                                     R8                                                                     1                                     12K 1% 0805
                                                                                                                                                                     R26                                                                                              33P 0805
                                                                                                                                 ST2(4)_IN_L-                                                      U3B
c                                                                                                                                                                                         6                                                  2K2 1% 0805             R32
                                                                                                                                                                     10K 1% 0805
                                                                                                                                                       47/25
                       ST2(4)_IN_R+
                       ST1(3)_IN_R+




                                                                                                                                                                                                                     7
                       ST2(4)_IN_L+




                                                                                                                                                                                                                                                                     12K 1% 0805
                       MIC_OUT+




                                                                                                                                                       C12                                5                                                                                                                                       SW3C
                                                                                                                                 ST2(4)_IN_L+                        R27                                                                                                                                              9          SW4PCOL (SPUJ)




                                                                                                                                                                                                                                 6
                                                                                                                                                                     10K 1% 0805                   TL072D SMD                         VR2A                     6                               C14                                 8                      ST2_LSUM
                       MIC-




                                                                                                                                                       47/25                                                                          POT14 20KK X2                                    7                              7
                                                                                                                                                                                                    R29                                  4                     5
                                                                                                                                                                                                    10K 1% 0805                                                                                47/25        R54
                                                                                                                                                                                                                                                                     U4B
                       9
                       7
                       5
                       3
                       1




                                                                                                                                                                                                                                                      R31                                                   47K 0805
                                                                                                                                                                                                      C37                                             10K 1% 0805 TL072D SMD
                                             CN1




                                                                                                                                                                                                                                 1
                           9
                           7
                           5
                           3
                           1




                                             BOX 5X2 M 90 DEG
                                                                                                                                                                                                        33P 0805
                           10
                           8
                           6
                           4
                           2




                                                                                                                                                                                                     C38
                                       10
                           ST2(4)_IN_L- 8
                           ST2(4)_IN_R- 6
                           ST1(3)_IN_L+ 4
                       MIC_OUT+_NML 2




                                                                                                                                                                                                     33P 0805                                                                                                         SW3B
                                                                                                                                                                                                                                                                     C39                                             SW4PCOL (SPUJ)
                                                                                                                                                                                                    R30                                                                                                          6
                                                                                                                                                                                                                                                                                                                                 5                        R137               MIXR
                                                                                                                                                                                                    10K 1% 0805                              R7
                           MIC+




                                                                                                                                                             C13                                                                                                     33P 0805                                    4
b                                                                                                                                 ST2(4)_IN_R-                        R28                           U3A
                                                                                                                                                                                                                                                                                                                                                          12K 1% 0805
                                                                                                                                                                                                                                             2K2 1% 0805             R33
                                                                                                                                                                      10K 1% 0805             2
                                                                                                                                                             47/25                                                       1                                           12K 1% 0805
                                                                                                                                                             C18                              3                                                                                                                                 SW3D
                 TO CONNECTOR PCB                                                                                                 ST2(4)_IN_R+                        R34                                                                                           U4A                                        12              SW4PCOL (SPUJ)
                                                                                                                                                                                                                                 5




                                                                                                                                                                                                    TL072D SMD                        VR2B                 2                               C19                                   11           ST2_RSUM
                                                                                                                                                                      10K 1% 0805
                                                                                                                                                             47/25                                                                   POT14 20KK X2                                 1                           10
                                                                                                                                                                                                     R35                                3                  3
                                                                                                                                                                                                     10K 1% 0805                                                                           47/25           R55
                                                                                                                                                                                                                                                              TL072D SMD                                   47K 0805
                                                                                                                                                                                                       C40                                             R36
                                                                                                                                                                                                                                                      10K 1% 0805
                                                                                                                                                                                                                                 2




                                                                                                                                                                                                          33P 0805




a

    ALLEN&HEATH
                                                                                            CHK                                                                      VR1C                         VR2C
                                                             ISSUE BY             DATE
                                                                                            BY
                                                                 A      MDG 18-12-03                                               BRKT
                                                                                                                                                                     POT14 20KK X2
                                                                                                                                                                      BRKT
                                                                                                                                                                                                  POT14 20KK X2
                                                                                                                                                                                                   BRKT                                                                                                                                                                    TITLE:     GL2400 STEREO INPUT
                                                                                                                                 5


                                                                                                                                        6




                                                                                                                                                                     8


                                                                                                                                                                               9




                                                                                                                                                                                              8


                                                                                                                                                                                                          9




    Kernick Industrial Estate,                                                                                         VR0B                                                                                        BRKT
                                                                  1       MG  24-08-04
    Penryn, Cornwall,                                                                                               POT11 10KZ                                                                                                                                                                                                                                             PAGE:
                                                                 1.1     MG 22/09/04           KV
    England. TR10 9LU
    Tel: +44 (0)8707 556250
    Fax: +44 (0)8707 556251                                                                            FILE:    C5648_1-1P1.Sch                                                                                                                                                                             PRINTED:          13:46:49      6-Dec-2004                     DRG No:    5648               ISSUE:    1.1       SHEET:         1   OF   3
                               A                                                           B                                                                     C                                                           D                                                     E                                                             F                                                  G                                                    H

                                                                                                                                                                                                                                                                                                                                                                                                                       003-243 iss.1.1
                                                                                                                                                             C55                                       C4 47/25       R75
                                                                                                                                                                                                                      100K 1% 0805
                                                                                                                                                                  330N 0805
                                                                    VR3A                                                                                  VR6A
                                                                    POT14 20KB X2 C/D                                                  R2              POT14 20KB X2 C/D                 R3
                                                        6                     1                                                                        6             1
                                                                                                       C49                             2K2 1% 0805                                       2K2 1% 0805
e                                                                                                                                                                                                                               SW4A




                                                                     4




                                                                                                                                                              4
                                                                          C43
                                                                                                       22P_S                                                       R90                                                      SW2PCOL (SPUN)
                                                                          1N0 0805                     R48                                                                              R74
                                                                                                                                                                   6K8 1% 0805                                               1
                                                                         R70                           47K 0805                                                                         100K 1% 0805                                   2            POSTEQ_L
                                                                         8K2 1% 0805                                                                                                                                         3
                                 EQ_INL                 R47                                    6                                         R73                                   6                                       C5
                                                        47K 0805                                                      7                  100K 1% 0805                                                    7
                                                                             R72          5                                                         R49                        5
                                                                             100K 1% 0805                                                                                                                              47/25
                                                                                                            U5B                                            47K 0805                          U6B                                    R76
                                                                                                         TL072D SMD                                                                       TL072D SMD                                100K 1% 0805
                                                                                                        C46                                                                              C52
                                                                             R82                                                                            R84
                                                                              27K 1% 0805               22N 0805                                            27K 1% 0805                  2N2 0805
                                                                                                        R83
                                                                             C45                                                                           C51
                                                                             22N 0805                   27K 1% 0805                                        2N2 0805
                                                                      4




                                                                                                                                                      4
                                                                                                                                                                                          R85
                                                                                                                                                                                       27K 1% 0805
                                                            1                      6                                                         1                    6
d                                                                                                                                                    VR4A
                                                                     VR5A
                                                                     POT14 20KB X2 C/D                                                               POT14 20KB X2 C/D                                   C9


                                                                                                                                                              C56                                        47/25         R80
                                                                                                                                                                                                                       100K 1% 0805
                                                                                                                                                                   330N 0805
                                                                VR3B                                                                                         VR6B
                                                              POT14 20KB X2 C/D                                                         R5                POT14 20KB X2 C/D               R6
                                                            5             2                                                                               5             2
                                                                                                        C50                             2K2 1% 0805                                       2K2 1% 0805
                                                                                                                                                                                                                                     SW4B
                                                                      3




                                                                                                                                                               3
                                                                             C44                                                                                                                                                     SW2PCOL (SPUN)
                                                                                                        22P_S                                                         R91                                                       4
                                                                             1N0 0805                   R52                                                                              R79
                                                                                                                                                                      6K8 1% 0805                                                               5     POSTEQ_R
                                                                          R71                           47K 0805                                                                         100K 1% 0805                           6
                                                                          8K2 1% 0805                   U5A                                                                              U6A
                                  EQ_INR                 R51                                       2                                        R78                                    2                                    C10
                                                                                                                          1                                                                                  1
c                                                        47K 0805
                                                                               R77          3
                                                                                                                                            100K 1% 0805
                                                                                                                                                       R53                         3
                                                                               100K 1% 0805                                                                                                                             47/25
                                                                                                                                                            47K 0805
                                                                                                        TL072D SMD                                                                       TL072D SMD                                  R81                                         R66
                                                                                                                                                                                                                                     100K 1% 0805                           8K2 0805
                                                                                                         C48                                                                              C54
                                                                                                                                                                                                                                                                                                                                                      CN6
                                                                               R86                                                                           R88                                                                                                                                                      R95
                                                                                                                                                                                                                                                                                                                                    +VA                1




                                                                                                                                                                                                                                                                                                AUX5
                                                                                                                                                                                                                                                                                                AUX3
                                                                                                                                                                                                                                                                                                AUX1
                                                                                                                                                                                                                                                                                                MIXL
                                                                                                                                                                                                                                                                                         GRP3
                                                                                                                                                                                                                                                                                         GRP1
                                                                                                                                                                                                                                                                                                                    10R PF RAD




                                                                                                                                                                                                                                                                                                48V
                                                                               27K 1% 0805               22N 0805                                            27K 1% 0805                  2N2 0805                                                                                                                                                     2
                                                                                                         R87                                                                              R89                                                                                                                                                          3
                                                                              C47                                                                           C53                                                                                                                                                                   C16
                                                                                                                                                                                                                                                                                                                                                       4




                                                                                                                                                                                                                                                                                         19
                                                                                                                                                                                                                                                                                         17
                                                                                                                                                                                                                                                                                         15
                                                                                                                                                                                                                                                                                         13
                                                                                                                                                                                                                                                                                         11
                                                                                                                                                                                                                                                                     BOX 10X2 M 90 DEG
                                                                              22N 0805                   27K 1% 0805                                        2N2 0805                      27K 1% 0805                                                                                                                             47/25
                                                                         3




                                                                                                                                                       3




                                                                                                                                                                                                                                                                                         9
                                                                                                                                                                                                                                                                                         7
                                                                                                                                                                                                                                                                                         5
                                                                                                                                                                            



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