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6 5 4 3 2 1
REVISION RECORD
LTR REVISIONS DONE OR ECO NUMBER: DATE:
R151 F6 Changed C62 and 63 to 22uF/25V non-polar. 9/13/95
PHANTOM_PWR B
0.1 U.L. & other modifications. A
S 2/2/96
221 OHM (SH1, C5)
(SH2, C4) 0.2 U.L. & other mods, take #2...
B
A 05/02/96
S
C68 R5 C3 C4 C5
R1 Del TP5 (Sh2), rename TP1 (Sh4) RS232, chg
D SENSE MIC 1 100 OHM 100 OHM
A00 R9, 20 from 4K99 > 1K00; R33 3K01 > 1K37.
B
R
A
S 07/23/96
D
47NP 330pF 4.7NP .001uF A01 Change R11 to 1K00, C5 to .001uF B 10/15/96
J1 C1 Change R10,21 from 499 to 100 Ohm.
XLR-FEMALE R3 R7 R11 A02 Change R11 from 1K to 4K99. RB 10/14/97
470pF
1K00
2 C65 NOTE: Gain boosted 14dB Note: PCB remains at A.01
1 49K9 4K99
3 3 CW
2 U1A SENSE 1 2
R9
6 U1B
47NP R8A
4 R4
C2
- 1 TRIM 10KB
- 7
3 1K00 5 TP1
1K00 (FRONTPANEL
470pF + +
BA4560 ADJ. TRIMMER) 1 BA4560
C69 R2 R6
R10
47NP 100 OHM 100 OHM 100 OHM
R12 C6 +15VA
NOTE: 49K9 330pF
J6 (Sh 2) Disables phantom power for all mics.
Remove R151 and/or R152 to CW 3 SYMMETRY ADJ.
disable phantom power for 2 (TRIMMER)
Sense Mic 1 and/or 2 only. R26
C R152
R23 R24
1
100K
C
10K0 2K00 C16
PHANTOM_PWR
221 OHM (SH1, D5) C12 R27
(SH2, C4) .0022uF + 100K0
C70 C9 C10 10/35 -15VA
R13 R17
R30
SENSE MIC 2 100 OHM 100 OHM
R28
47NP 330pF 4.7NP
J2 C7 2M2
XLR-FEMALE R15 R19 1K37
1K00 470pF
2 C66 6 4
49K9 -15VA
1 C13 CAP SYM
3 U2A U3A
2 3 1 7
47NP - 1 SENSE 2 CW
R20 R33 R34 IN OUT
R16 2
4
1K00
C8 3
+
TRIM R144A .1uF THAT2252
470pF BA4560 (FRONTPANEL 10KB 1K00 1K37 20K0 R31 BIAS GND
C71 R14 R18 ADJ. TRIMMER) 1 73K2
C18 2 3
R21
B 47NP 100 OHM 100 OHM
R22 C11
100 OHM
150pF
B
49K9 330pF C15 R29
D1 .1uF 536K
1N4148
1
TP2
SENSE LOG R36 R35 U4A
2 2 D2 -15VA
100K -
ADJUST 56K2 3
1
SENSE
6 U2B (TRIMMER) 3 CW + (SH4, D2)
- BA4560 1N4148
7
5
+
BA4560
-15VA
COMPANY:
SYMETRIX INC.
A 14926 35th Avenue West A
Lynnwood, WA 98037-2303 USA
TITLE: REV:
DRAWN: B
A
DATED:
571 SCHEMATIC A02
S 2/2/96
DRAWING NO:
RELEASED: DATED:
52 571- 1 SHEET: 1 OF 6
6 5 4 3 2 1
FORMAT
J3-2 C19
R41 R37 PAGE/MUSIC
MUSIC INPUT + (REAR PANEL)
9 8
2K00 43K2 47pF MUSIC PAGE OVER
C21 (SH3, B6) MUSIC
D R43
100K0 470pF
R39 7 SW3C
(FRONT PANEL) 6
-
U6B
7
D
J3-3 45K3 5
R63 2 +
GND 6 U4B
100K0 1 3
CW
BA4560
- 7 R78
5 50KB
R44 C22 +
470pF BA4560
100K0
J3-1 Q1
R42 R38 2N5458
MUSIC INPUT - C40 R81 R80
2
1
2K00 43K2 .039uF 536K 10K0
R40 C20
45K3 47pF +15VA R79
J6
3
13K0
PHANTOM PWR
PHANTOM_PWR
(SH1, C5) 1
R153 ENABLE
(SH1, D5) 2
221 OHM 3
DISABLE
C C72 R53 R57 C31 C32
NOTE:
J6 disables phantom power for
C23
4.7NP
C
all mics. Remove R153 to dis-
47NP 100 OHM 100 OHM 330pF able phantom power for page mic only.
4.7NP
R55 C29
PAGE MIC SIGNAL
J4 (SH3, D5)
XLR-FEMALE 1K00 470pF
R59 TRIM
(FRONT PANEL R77
2 C67 ADJ. TRIMMER) VOICE
PAGE MIC 49K9 10K0
1 3 CW (SH3, A6) D25
R158
INPUT 3
2 U5A
R60A 2
47NP - 1 C41 A2
10KB R82
4 3 10K0 (SH4, C2)
R56 C30 + 1N4148 (SH4, C4)
BA4560 1
1K00 470pF 13K0
4.7NP INSTALL R158 & D25
C73 R54 R61 R64 R73 FOR OPTION T, ONLY
R58
301 OHM 4K99 REMOVE C41 AND/OR R82
FOR OPTION T, ONLY 499K0
47NP 100 OHM 100 OHM
C36 D3
R62 C33 6 U7B D4
49K9 - R75
330pF 7 Q2
B C34
47pF 1N4148 5
+
LF353N 10K0
2N4401 B
1N5245
R68
150pF
C38 R76
R66 100K0 .47uF 10K0
J3-5 C24 R70
R49 R45 15K8
PAGE LINE 100 OHM R71 R72 R74
INPUT + C28 R65
2 U6A C35
2
-
U7A
1
2M2 100K0 2K00
2K00 43K2 47pF - 1 3
R51 C26 15K8 3 +
R47 4.7NP + LF353N
100K0 470pF -24VA
BA4560 .022uF
TP3 (SH5, B3)
J3-6 45K3 R67 R69
100K0 -15VA
GND 6
-
U5B
7
10K0
5
+ C37
R52 C27 BA4560 4.7NP COMPANY:
J3-4
100K0 470pF
SYMETRIX INC.
A PAGE LINE
-
R50 R46
14926 35th Avenue West A
INPUT 2K00 43K2 Lynnwood, WA 98037-2303 USA
R48 C25 TITLE: REV:
45K3 47pF DATED:
DRAWN: B
A 571 SCHEMATIC A02
S 2/2/96
DRAWING NO:
RELEASED: DATED:
52 571- 1 SHEET: 2 OF 6
6 5 4 3 2 1
C44
82pF
R90A
1 16
10K0
D R86
61.9 OHM
+15VA C43 R90B
2 U10A C46 J3-9
D
2 15 R91
- 1
R95
150pF 10K0 3
+
+ OUTPUT
BA4560 100 OHM 47NP
R89 3
VC
(SH4, B3) 1K37 R90C R93
3 7
13K0 10K0 100K0
+15VA EC1 VCC J3-10
U8
1 8 2 U9A 14
SIGNAL
(SH2, C1)
IN 2150A OUT
3
- 1 GND
S V E G C42 + C45
1 Y E C N BA4560
M E 2 D 470pF
R94
R88 R87 4 5 2 6
2 100K0
82pF
THD TRIM 100K
C47 J3-8
301K R90E R92
(TRIMMER) CW 12 5
3 U9B
R83
51.1
6
- 7 - OUTPUT
5 10K0 100 OHM 47NP
+
BA4560 6 U10B
-
C -15VA
13
R90D
4 5
+
7
C
R85 R84 BA4560
4K99 61.9 OHM 10K0
SYMMETRY ADJ SOURCE LOG ADJ.
-15VA (TRIMMER) (TRIMMER)
+15VA
R98
+15VA 100K -15VA R107