Infinity reference series User manual

RS-8/RS-8a
Reference Series
Speaker System
SERVICE MANUAL
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 11797 REV 2 6/2001
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RS-8/RS-8a
2
TABLE OF CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
DETAILED SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SET-UP GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
SERVICE BULLETIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
SYSTEM COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
AURAL SWEEP TEST SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
PASSIVE SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
AMPLIFIER EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PCB DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
POWER TRANSFORMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
RS8 ELECTRICAL PARTS LIST (120V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
RS8a ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
RS-8 EARLY REV0 SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
RS-8 REV1 SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
RS-8a SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
IMPORTANT NOTE:
THIS MANUAL IS FOR BOTH MODELS RS-8 and RS-8a.
MODEL RS-8 DOES NOT HAVE AN “M” IN THE SERIAL NUMBER.
MODEL RS-8a HAS AN “M” IN THE SERIAL NUMBER.
serial number is located in the speaker input cup.
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Specifications
RS-8/RS-8a
3
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RS-8/RS-8a
4
RS8 Amplifier, 100W Powered Sub/Plate Amp
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RS-8/RS-8a
5
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RS-8/RS-8a
6
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RS-8/RS-8a
7
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RS-8/RS-8a
8
Trouble Shooting
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RS-8/RS-8a
9
Service Bulletin
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RS-8/RS-8a
10
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RS-8/RS-8a
11
Component Exploded View
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RS-8/RS-8a
12
RS-8a Amplifier Exploded View
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Block Diagram
RS-8/RS-8a
13
Attenuation
SPKR Level in
Low Level in
Low Level in
Normal
H.P. Filter
Direct
Vol. Ctrl
Auto on/off
Auto
On
L.P. Filter
L.P. Filter Limiter
&
O/P Limited
Soft Clip
-15V
+15V
P.L.
Mute
Power Stage
O/P CTRL
Temperature
Protect
Protect
Protect
Over Load
DC Offset
HV
Rectifier
AC120V/60Hz
Speaker Power SW.
P.T.
Fuse & Holder
+/-15V
Power Supply
+15V
-15V
RS8 Pre Amp.
RS8 Power Amp.
-
+
00022
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RS-8/RS-8a
14
RS-8a Circuit Boards
Control PCB Main PCB
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RS-8/RS-8a
15
RS-8a Circuit Boards (Cont.)
Control PCB Main PCB
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RS-8/RS-8a
16
RS-8a Circuit Boards (Cont.)
Control PCB Main PCB
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RS-8 Circuit Board
RS-8/RS-8a
17
C15
C23
+
JW4
JW3
JW2
C5
C11 C7
OFF
AUTO
C
ON
SW1
POT
R41
C28
+
Q1 C2 +
4
3
SENSE
-V
85
TH1 -VO
Q6
JW9
JW10
JW11
TF1 TF1
LINE 1
Q5
SPEAKER
OUT(-) L1 CT
BR1
-AC AC +
LINE 2
A
AGND
1+VO
C31
++
-+
C32
C1
JW5
SW2
C27
+
+
+
JW14
C29
C18 +
Q4
R36 5
+
+
7
JW8
GATE
C17
C4
2
+V
JW13
JW1
MAIN PCB
CL1268
REV-02 +C9
LED CONN
4
RSP
8
3
B
A
3
7
TRIAC1 JW12
F1
1
2
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RS-8/RS-8a
18
TERMINAL FASTON (3X)
AMP 2-520263-2 (3X)
0.187" X 0.020"
OR EQUIVALENT
(MATES WITH FASTON
TERMINAL 0.250" X 0.032")
WIRE LENGTH
(INCLUDES TERMINAL)
RED COLOR (2X)
RED COLOR WITH
YELLOW STRIPE AROUND
3.570
R0.188
(2X)
3.080
1.330
2.650
2.600
11.00
00016
INPUT
OUTPUT
115 V @ 60 HZ
NO LOAD
NOMINAL 33.3 V CT (SEC 1) 33.3 V CT (SEC 2)
WITH LOAD 30.12 V CT @ 2.0 Amps. (SEC 1)
30.12 V CT @ 2.0 Amps. (SEC 2)
PRI 5.06 Ohms MAX
SEC1 1.0 Ohms MAX
SEC2 1.0 Ohms MAX
115V CENTER TAP TO
BE RED WIRE WITH
YELLOW STRIPE
3
5
RED
RED
34V @ 2A
34V @ 2A
00017
Power Transformer
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RS-8/RS-8a
19
RS-8 Electronic Parts List (120v)
Model RS-8 does not have an “m” in the serial number.
Model RS-8a has an “m” in the serial number.
Reference Designator Part Number Description Quantity
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RS-8/RS-8a
20
Reference Designator Part Number Description Quantity
Electronic Parts List (Cont.)
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