Symetrix 501 Schematics

6
D
INPUT
R38
J1
2K10
XLR-FEMALE
2
1
3
4
R100
CHGND
2K00
C1 C2
.001 .001
J2
C
SIDECHAIN
(SH2)
B
A
5 4
C5
47pF
R1 R3
43K2 45K3
U1A
C7
2
R5
-
1 1
IN
3
+
13K0
4.7NP
BA4560
R2
13K0
+15V
R4 C6
15K0 150pF
3 CW
R9
R17
2
100K
TRIM 1M
R7
1
5K11
- 1 5 V
R19
VC
825 OHM ( S H 2 & 3 )
R18
61.9 OHM
3
+15V
R118
R119 3 CW
* * *
* * *
2
100K
C9
TRIM 768K
C10
1
+15V
82pF
82pF
R20 - 1 5 V
R22
3 7
EC1 VCC
13K0
10K0
U2
U1B
8 6
R21
2150A OUT -
U4A
7 2
-
5
S V E G
+
10K0 3
Y E C N
BA4560 +
M E 2 D
BA4560
4 5 2 6
+15V
R6
51.1 OHM
3
CW
R10
2 OUTPUT
R11
50KB GAIN
7K50
R8
1
61.9 OHM
5
+
- 1 5 V
6
- 1 5 V
-
R33
10K0
DRAWN: DATED:
B
A
0 3 / 1 2 / 9 6
S
RELEASED: DATED:
2
LTR REVISIONS DONE OR ECO NUMBER:
F.3 Redraw in PADS; chg 5% resistors w/ 1%.
Changed R102 from 130 ohms/5% to 121
F.4
ohms/1% to standardize on 1% values.
F.5 C h a n g e d n o t e o n p g 3 t o m a k e R 2 9 - 3 0 2 0 O h m 1 0 / 8 / 9 7
*** SEE NOTES ON PAGE 3 REGARDING OUTPUT
TRANSFORMER OPTION (501-01)
C13 * * *
+
1 0 0 / 3 5
T2 * * *
R30 * * *
121005
1 5 7
100.0
R31
100K0
4 2
6 8
R32
100K0
U4B
R29 * * *
7 3 1
100.0
BA4560
C14 * * *
+
+15V
1 0 0 / 3 5
+15V
R37
2K37
R35
200K0
D2
OUTPUT
RED
U9D
9 PEAK
+
D1 14
8
-
LM339
1N4148
R34 C17 R36
1M .1uF 49K9
COMPANY:
SYMETRIX, INC.
14926 35th Avenue West
Lynnwood, WA 98037-2303 USA
TITLE:
501 LIMITER - COMPRESSOR
DRAWING NO:
020150
1
REVISION RECORD
DATE:
0 3 / 1 2 / 9 6
0 5 / 0 9 / 9 6
D
OUTPUT
J3
XLR-MALE
2
1
3
4
CHGND
J 4 C
B
A
REV:
F.5
SHEET: 1 OF 3