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6 5 4 3 2 1
CHANNEL 1 INPUT R27
+15VA
C14
BALANCED UNBALANCED
61.9 U5 1/4" TRS J5
J1 XLR-FEM
2150A 3 7 82pF
2 EC1 VCC
1 R1 R4 C3 C10 R26 R25
3 1 8
D 4 2K00 13K0 100PF 4.7NP 30K1
IN 2150A
S V E G
OUT
15K0
O/PLEDS_CH1
C26
D
R33
C69 C2
R3
Y E C N
M E 2 D CHANNEL 1
470pF 470pF
+15VA 4 5 2 6 6
-
U1B
7
158.0 47NP OUTPUT
15K0 5 C74 R61 BALANCED
1 + 470pF 100K0
2 U1A 4560 XLR-MALE J 4
BAL/UNBAL C70 C1 - 1 2
R29 C15
J2 1 / 4 " T R S 470pF 470pF R50 2
3
+ 100K 499K0 R28 1
R2 R5 4560
3 CHANNEL 1 5K11 82pF
DISTORTION R35 3 4
C73 2K00 13K0 TRIM R30
C75 R60
C4 R6 51.1
-15VA 13K0 470pF 100K0
100PF 15K0 -15VA R36
6 U2B R34 C27
470pF - 7
13K0 5
+ 158.0
C11 4560 47NP
R31
4.7NP
61.9
C SIDECHAIN
SEND/RETURN
C
J13A
R24
J3 1 / 4 " T R S R32 J13B
J13C EXPLEDS_CH1
100.0 1K00
R23 C12 J13D COMPLEDS_CH1
R94 C35
J13E LIMLEDS_CH1
6K98 CH1_CTRL J13F
4.7NP
100K0 .001uF J13G
R46 C72 C71 J13H 3
R93 CHANNEL 1 2 SW2A
100K0 470pF 470pF
J13I 1
CHANNEL 1 1 49K9
IN/OUT LINK J13J EXPLEDS_CH2
R95 (SHOWN IN) COMPLEDS_CH2
MASTER R99 2 6 U12B (SHOWN IN STEREO LINK) J13K
- 7 3 SW1A J13L LIMLEDS_CH2
+15VA
OUTPUT LEVEL 50KB 357K0 5 2 7
R128
(FRONT PANEL) R96 + 8 J13M O/PLEDS_CH2
3 CW 4560 1 CV_IN_CH2
301K 2K10
9 SW2C J13N
CH2INOUT.2
B 6
J13O
J13P
B
S/C_JACK_CH2 5
C13 R45 10 -15VA
TO LOGAMP INPUT -15VA 4 SW2B 11
S/C_IN_CH1
SW2D 12
4.7NP 6K98
REVISION RECORD
LTR REVISIONS DONE OR ECO NUMBER: DATE:
E3 RESISTORS AS PER ECO 425-12 4/6/94
R79, R172 to 250K. R80, R173 to 137K0.
A0 R39, R146 to 4K87. Added HS1, HS2. 3/20/95
C7, 17, 28, 44, 52, 57, 60, 65 COMPANY:
A1
B0
to 4.7uF/35VNP, per ECO.
Changed to A Series Neutrik, added
6/13/95
8/2/95
SYMETRIX, INC.
A B1
Molex to power supply.
Added LIM SYM test points. 8/11/95
14926 35th Avenue West A
Lynnwood, WA 98037-2303 USA
C0 CHANGED GROUNDING - PCB ONLY 9/19/95
TITLE: REV:
Changed pcb decals of 1N4003 diodes from
C1 DO-7 to DO-41.
2/22/96 DRAWN: DATED:
425 DUAL COMP/LIMITER/EXPANDER C.4
Chg'd 5% resistors to 1%: 150 to 158, 510K to BA
C2 499K, 560K to 536K (no changes to pcb art). S 3/27/96
DRAWING NO:
C3 Chg'd R161 from 18 ohms/5% to 10 ohms/1%. BA
0 5 / 0 9 / 9 6 RELEASED: DATED:
S
022425 SHEET: 1 OF 7
C4 ADDED RESISTOR TO EACH LOGAMP OUTPUT. RB 9/26/97
6 5 4 3 2 1
NOTE: R188 ADDED TO CORRECT "OVERACTIVE" HARRIS 3046 D1 CHANNEL 1
U9C PART MAY BE OMITTED OR CHANGED IN VALUE IF NECESSARY.
MC3346P IN/OUT
10 11
R188 1N4148 CH1 COMPRESSOR (SHOWN IN)
S/C_IN_CH1 R7
U9B SW1C
MC3346P
R67
13K0
C5
1M
SIDECHAIN 7
R63 8 7 8
D 200K0
9
R66
1M
2K67
C22
3.3
+
TP1
22pF
9 D
D8 + C21
6 2 U2A R76 D11
10uF 3 U8A - 1
+ R9
C19 1 3 COMPLEDS_CH1
1N4148 2 + 191
- 4560 1N4148
+15VA 4560 2K10
R62 R78
22pF C6
-15VA .22uF R8 500KA
1 6 U6B CW 5 U8B
- 7 2K10 + 7 D16
R64 1 3
CHAN 1 R49 2 5 R54 R56 6K04 6 1N4148
+ U9D +15VA 2 -
LOG CONV 100K 4560 4560
MC3346P R75
TRIM 200K0
3 CW
R65 13 14 3K48 30K1 -15VA RELEASE 2K10 R74 R72
100.0
+ C18 (FRONT PANEL) C28 30K1
CW 3
33uF CW 3 4.7NP
R55
2
COMPRESSOR 10K0 2 R85 RATIO
-15VA 12 R59 THRESHOLD R73
-15VA 50KB (FRONT PANEL)
50KB 10K0
158K0 (FRONT PANEL) + C23 R77 1
R57 1
10uF 10M
C R47
1 3 5
1K00
R58
2K00
D10
1N4148
C
10K0 CH1_CTRL
R48 U9A D3
2 U6A C20
- 2 MC3346P 4
1 -15VA
10K0 3
+ -15VA 1N4148 +15VA
4560 4 22pF
U10A C8 R52
2 MC3346P U4B
U10D 4560 10K0
5 R51
MC3346P R15 22pF R19 + 7
6 2 U7A
13 14 100.0 - -
1 3 5 10K0 1
1M
3
PEAK_DET_CH1 2 U4A +
- R16 4560
R18 1 Q1 R41
12 3 2N4401
-15VA + 1K00
4560 10K0 SW1B
20K0 6
C9 R40 5
.22uF D5 D6 4
B U3A
R17
2K67 R20
10K0
D4 150K0 CHANNEL 1 B
4560
1N4148 1N4148 1N4148 IN/OUT
3 -15VA -15VA (SHOWN IN)
+ 1 R42
2 -
2 RELEASE 2K10 D15
D2 1 3 (FRONT PANEL) R43
CW + C17 10M
R44 C16
R12 4.7NP 1N4148
1N4148 500KA 3.3
13K0 +15VA
R10
200K0 1
CH1 EXPANDER SIDE CHAIN EXPLEDS_CH1
R14 EXPANDER -15VA
2 R22
C7 50KB THRESHOLD
4.7NP 536K (FRONT PANEL) 6 U3B D7
CW 3 - R53
COMPANY:
R11
6K98
R13
1M5 (BYPASS)
R39
5
+
7
10K0
SYMETRIX INC.
A 4K87
4560
R37
1N4148
14926 35th Ave. W. A
R21
73K2 +15VA Lynnwood, WA 98037-2303
10M TITLE: REV:
-15VA R38 DRAWN: DATED:
425 DUAL COMP/LIMITER/EXPANDER C.4
2M0 DRAWING NO:
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