INTERMEZZO
1.2s Subwoofer
Service Manual
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 11797
REV 4 5/2005
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INTERMEZZO 1.2s
Specifications
Frequency Response:
23Hz - 130Hz (±3dB)
30Hz - 130Hz (±1.5dB)
Subwoofer Amplifier Output:
850 watts continuous
(In to 89from 20Hz-100Hz with no
more than 0.1% THD)
2,600 watts peak
2nd- and 3rd- Order Harmonic Distortion:
Crossover Frequencies:
Dimensions (H x W x D):
Weight:
<1%
(20Hz - 130Hz, @ 95dB SPL)
50Hz - 130Hz (continuously variable)
24dB/Octave
15-1/4” x 18-1/4” x 13-3/4”
(387mm x 464mm x 349mm)
60 lb (27.3kg)
Infinity continually strives to update and improve existing products, as well as create new ones. The
specifications and construction details in this and related Infinity publications are therefore subject to
change without notice.
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INTERMEZZO 1.2s
Detailed Specifications
4
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INTERMEZZO 1.2s
Detailed Specifications (Cont.)
5
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INTERMEZZO 1.2s
Controls and Connections
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INTERMEZZO 1.2s
Controls and Connections (Cont.)
7
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INTERMEZZO 1.2s
Controls and Connections (Cont.)
8
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INTERMEZZO 1.2s
Controls and Connections (Cont.)
9
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INTERMEZZO 1.2s
Operation
The operation of the Intermezzo1.2s subwoofer with regards to the proper settings for the Room Adaptive Bass
Optimization System, or R.A.B.O.S., is thoroughly covered in the Owner’s guide, part# 336204-001. For service
purposes, the R.A.B.O.S. system is canceled when all three front panel controls (F) (L) (W) are turned fully
Clockwise. The only other control of concern is the Main Level Control on the front panel, which is a traditional
potentiometer.
10
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INTERMEZZO 1.2s
Mechanical/Packaging Parts List
Ref No.
Description
Part Number
MECHANICAL
1
2
3
4
5
6
7
GASKET, REAR
331106-001
335036-001
336202-001
900201-008
333249-003
335270-001
900301-008
(NOT FOR SALE)
335735-040
335739-030
12” Woofer C.M.M.D. Shielded, DCR 7.6 ohms ±10%,
RABOS ASSEMBLY
SCREW, 8-32 x .5 BLK, MS,PPH (16)
GRILLE CUP (14)
Front BAFFLE
SCREW, 6-32 x .5 BLK, MS,PPH (12)
AMPLIFIER
8
9
GRILLE (See options below)
DÉCOR TRIM PANEL (See options below)
PACKAGING
10
11
12
13
14
15
16
17
18
RABOS KIT
335852-002
335459-001
336658-115
336213-001
336213-002
336504-001
336204-001
335841-001
335868-002
FOOT PAD (4)
POWER CORD (15 ft)
TOP END PAD
BOTTOM END PAD
CARTON
OWNERS MANUAL
WARRANTY CARD
SURVEY CARD
Description
Part Number
335735-040
335735-050
335735-060
335739-030
335739-020
335739-010
Grille, Warm Platinum
Grille, Midnight Blue
Grille, Rich Burgundy
Décor Trim Panel, Black
Décor Trim Panel, Cherry
Décor Trim Panel, Maple
11
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INTERMEZZO 1.2s
Exploded View
INTERMEZZO 1.2S
CABINET
(NOT FOR SALE)
4
1
2
3
4
(ROTATED)
5
SEE
VIEW
AMPLIFIER
(NOT FOR SALE)
A
7
6
VIEW
9
A
DÉCOR TRIM PANEL, BLACK 335739-030
DÉCOR TRIM PANEL, CHERRY 335739-020
DÉCOR TRIM PANE, MAPLE 335739-010
(REDUCED)
8
GRILLE, WARM PLATINUM 335735-040
GRILLE, MIDNIGHT BLUE 335735-050
GRILLE, RICH BURGUNDY 335735-060
REMOVE THESE
GRILLE CUPS
AND
SCREWS ONLY
TO SERVICE THE INTERMEZZO 1.2s
1) Remove the grille and side panel.
2) Extract (8) of the rubber grille retainers shown in view A above; this can be accomplished by
carefully pulling them out of the cavities with long-nosed pliers or similar tool.
3) Remove the (8) Phillips screws that are now exposed.
4) Carefully lift the front baffle, with driver and RABOS controls attached, off the cabinet.
5) To service the amplifier, remove the (8) phillips screws at the rear of the enclosure, and push
the amplifer assemby out the front.
12
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INTERMEZZO 1.2s
Packaging View
11
16
17
8
18
9
13
10
12
14
15
13
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INTERMEZZO 1.2s
Test Set Up and Procedure
AC VOLT
METER (10V)
SIGNAL
GENERATOR
INTERMEZZO 1.2s
UNDER TEST
SPEAKER
OUTPUT
FROM
AMPLIFIER
AMPLIFIER
The operation of the Intermezzo 1.2s subwoofer,and the proper settings for the Room Adaptive Bass Opitmization System, or
R.A.B.O.S., is thoroughly covered in the Owner’s guide, part #336204-001.
For service purposes, the R.A.B.O.S. system is canceled when all three front panel controls (F) (L) (W) are turned fully CW
(Clockwise).
The only other control of concern is the Main Level Control on the front panel, which operates like a traditional potentiometer.
Equipment needed:
• Function/signal generator/sweep generator
• Integrated Amplifier
• Multimeter
• RCA cables; Speaker cables
General Unit Function (UUT = Unit Under Test)
Switch/Controls:
MAIN LEVEL control full clockwise (0)
LOW PASS FILTER knob full clockwise (130 Hz)
LOW PASS FILTER button OFF (depressed)
HIGH PASS FILTER button OFF (depressed)
PHASE button - either position
1) From the signal generator, connect one line level (RCA) cable to the IM1.2s Low Level Input jacks (L/R) on the UUT. Use a
Y-cable from a mono source if necessary to connect to both inputs.
2) Turn on generator, adjust to 140mV, 50 Hz.
3) Plug AC power cord in UUT, turn power switch ON.
4) Red LED should ON (in the Level wheel at the front of the UUT). Turn up LEVEL control to full counterclockwise (10).
5) Green LED should ON; Bass response should be heard and felt.
6) Turn LEVEL control full clockwise (0). Turn power switch OFF.
7) Connect one pair of speaker cables to one set (either R or L) of the Speaker input terminals on UUT. Cables should be
connected to an integrated amplifier fed by the signal generator.
8) Turn on signal generator and adjust so that speaker level output at the amplifier is 7.0V, 50 Hz.
9) Turn power switch ON; turn LEVEL control full counterclockwise (10).
10) Bass response should be heard and felt.
Sweep Function
1) Follow steps 1-3 above, using a sweep generator as a signal source – adjust the generator to 100mV, 50 Hz.
2) Sweep generator from 20Hz to 300Hz. Listen for any rattles, clicks, buzzes or any other noises. If any unusual noises are
heard, test woofer according to the instructions below.
Driver Function
1) Remove woofer from the enclosure; (instructions in exploded view on page 12);
2) Check DC resistance of woofer; it should be 7.6 ohms ±10%,
3) Connect a pair of speaker cables to woofer terminals. Cables should be connected to an integrated amplifier fed by a signal
generator. Turn on generator and adjust so that speaker level output is 6.0V.
4) Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.
14
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INTERMEZZO 1.2s
Service Bulletin
Service Bulletin INF2001-04 Rev2 – May 2005
Warranty labor rate: MINOR repair
To:
All Infinity Service Centers
Model: Interlude and Intermezzo IL50, IL60, IL100s, IL120s, IM1.2s, IM4.1t
Subject: No Output
In the event you receive an Interlude or Intermezzo loudspeaker with the complaint: “There is no
output, and the LED on the volume control does not light, red or green”, check the item listed below:
1) Check the line fuse to make sure it’s not damaged. Replace if necessary
IL50, IL100s
IL60, IL120s
IM1.2s, IM4.1t
3A
4A
6A
Infinity part# FS0022
Infinity part# FS0026
Infinity part# FS0027
If the fuse is intact, or the unit still does not function, check the power supply portion of the amplifier
circuit, described below:
2) Refer to the Exploded view page for detailed instructions on amplifer removal from the enclosure.
3) Remove all connectors and screws necessary to detach the Power Supply PCB from the main chassis
heatsink. Squeeze the heads of the plastic standoffs with long-nosed pliers to detach the PCB from the
heatsink.
4) Refer to the illustration on page 2. Check the DC resistance of following parts, in circuit, with a DMM:
IRF740 MOSFETS Q501, Q502
Infinity part# QM0055
D to S or S to D
G to S or S to G
D to G or G to D
Should measure >28K ohms*
Should measure >400 ohms
Should measure >28K ohms*
22 Ohm 0.6W Resistors R506, R503
Infinity part# RM0340
422 Ohm 1/4 watt Resistors R505, R502
Infinity part# RM0397
Should measure 22 ohms ±1%
IL120s
IL60
Should measure 422 ohms ±1%
IRF740 MOSFETS Q4, Q5
Infinity part# QM0055
D to S or S to D
G to S or S to G
D to G or G to D
Should measure >28K ohms*
Should measure >400 ohms
Should measure >28K ohms*
* The two
transistor leads
should be shorted
together before
these
22 Ohm 0.6W Resistors R17, R20
Infinity part# RM0340
475 Ohm 1/4 watt Resistors R16, R19
Infinity part# RM0075
IRF740 MOSFETS Q403,404,406,407
Infinity part# QM0055
Should measure 22 ohms ±1%
IL50
IL100s
Should measure 475 ohms ±1%
measurements are
taken; the DMM
leads will “charge”
the circuit and the
value may change,
but should match
the values above.
Very low values
that do not change
indicate a shorted
MOSFET.
D to S or S to D
G to S or S to G
D to G or G to D
Should measure >28K ohms*
Should measure >400 ohms
Should measure >28K ohms*
IM1.2s
IM4.1t
22 Ohm 0.6W Resistors R407,410,414,417
Infinity part# RM0340
365 Ohm 1/4 watt Resistor
R408,411,415,418
Infinity part# RM0072
Should measure 22 ohms ±1%
Should measure 365 ohms ±1%
5) Replace any defective parts above that show measured values lower than normal.
6) Reconnect J505 or J6 multicolor ribbon cable connector; remount the Power supply PCB; reconnect
J501/502 or J4/J5 black/red Faston connectors.
7) All models except IM1.2S, IM4.1t: temporarily DO NOT connect the pair of black/red “CD±” leads on
the linear PCB). Isolate the ends so they are not touching each other, or any conductive material. (For
models IM1.2S, IM4.1t procedure is finished; replace amplifier).
15
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INTERMEZZO 1.2s
8) Connect the subwoofer amplifier to an AC power source; turn the unit ON. Measure the DC voltage at
the “CD±” wires; it should be 10-20 volts.
9) If it is 25 volts or greater, turn the amplifier OFF, disconnect from the power source, and replace:
IL120S, IL60: Q504,Q507 IRF640 on the Power Supply PCB, Infinity part# QM0015.
IL50, IL100s: Q1 IRF540 on the Power Supply PCB, Infinity part# QM0020.
10)If the voltage is normal, turn the amplifier OFF, disconnect from the power source, and reconnect the
“CD±” leads.
11) Finish reassembling the amplifier, remount the heatsink, replace the amplifier in the cabinet and test
the subwoofer.
16
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INTERMEZZO 1.2s
IM 1.2s ADJUST BIAS PROCEDURE
(Mandatory when any output MOSFET transistors Q305,310,320,321,306,307,311,312 are replaced)
1. Amplifier should be unplugged and OFF.
2. Remove Amp assembly from cabinet, following the instructions on Page 12.
3. Identify the Linear board assembly (PCB with the output transistors)
4. Adjust RP301 and RP302 fully Counter Clockwise. See diagram below.
5. Apply 120 VAC power to unit; turn power switch ON.
6. Verify LED illuminates on the front gain control dial, unless you have disconnected the plug.
7. Connect voltmeter set to DC millivolt range to twin pins on terminal J303, on Linear board.
8. Verify initial voltage is less then 0.1 mV.
9. Adjust RP301 Clockwise until voltmeter reads 0.3 mV + the initial current from step #8.
10. Adjust RP302 Clockwise until voltmeter now reads 0.6 mV + the initial current from step #8.
11. Turn amplifier OFF. Disconnect AC power to unit.
12. Remove voltmeter from terminal J303.
13. Replace amp assembly back into cabinet.
17
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INTERMEZZO 1.2s
Electrical Parts List
Part#
Reference Designator
Qty
Description
Linear Amplifier/Regulator Board
Semiconductors
DS0001
D301,D302,D303,D304,D305,
24
RECT, 100mA 75V SIGNAL 1N4148T
D306, D307,D308,D309,D310,
D311,D312, D313,D314,D315,
D316,D317,D318, D319,D320,
D321,D323,D325,D330
DR0085
QB0002
QB0017
QB0018
QB0033
QM0015
QM0032
QM0035-S
UA0003
UA0009
UF0013
UP0004
UV0007
UV0013
DZ0018
DZ0002
DZ0021
DZ0034
D324
Q314,Q315,Q317
Q303,Q308,Q322,Q323
Q302,Q304,Q309,Q313,Q316,Q324
1
3
4
6
1
4
4
1
1
1
1
1
1
1
1
1
2
1
RECT, 8A 400V TO220AC MUR860
TRANS, NPN 40V .6A TO92 2N4401
TRANS, NPN 150V 0.6A 2N5551TR
TRANS, PNP 150V 0.6A 2N5401TR
TRANS, NPN 250V 1A TO220 TIP47
MOSFET, IRF640 TO220AB
Q319
Q305,Q310,Q320,Q321
Q306,Q307,Q311,Q312
MOSFET, IRF9640 T0220AB
Q301
U306
U301
U304
U307
U303
U302
U305
Z303
JFET, J111 SELECTED TR ONLY
OPAMP, QUAD 14PIN DIL LM324N
OPAMP, QUAD 14P DIL TL074/084
FOTO, 6PIN MOC3012
PWM, 8PIN DIL UC3842N
VREG, LINEAR TO220 LM7905CT
VREG, +5V 100MA TO220 LM7805CT
ZENER, 2.5-37V SHUNT TL431CLP
ZENER, 500mW 12V 5% 1N5242B
ZENER, 500MW 15V 5% 1N5245B
ZENER, 500MW 10V 5% 1N5240B
Z301,Z302
Z304
Capacitors
CC0020
CC0040
CC0059
CC0065
CC0079
CC0082
CC0087
CC0108
CE0018
CE0098
CE0103
CE0106
CF0008
CF0035
CF0045
CC0032
CC0017
CC0021
CC0072
CC0078
CC0095
CE0121
C335,C366
2
3
6
2
1
4
2
2
2
5
1
3
1
2
2
1
1
3
1
1
2
2
CAP, CA 470PF 100V 5%
CAP, CA 4700PF 100V 10%
CAP, CA .1UF 100V 20%
CAP, CA 2200P 100V 10%
CAP, C .1UF 50V 20% 5MMLS
CAP, CA .1UF 50V 20%
C313,C324,C331
C311,C312,C322,C323,C372,C373
C337,C367
C343
C350,C351,C370,C371
C332,C338
C307,C317
C329,C330
C301,C309,C310,C319,C320
C348
C305,C315,C326
C342
C306,C316
C302,C303
C358
C340
C360,C362,C363
C341
C344
C345,C347
CAP, CA .01UF 100V 20%
CAP, CA 22PF 50V 10
CAP, E 100UF 25V 20% 5MMLS
CAP, E 22UF 50V 20% 5X11 5MMLS
CAP, E 100UF 35V 85DEG 5MMLS
CAP, E 22UF 35V BP 8X11 5MMLS
CAP, F 2200PF 100V 5% 5MMLS
CAP, F .022UF 100V 5% 5MMLS
CAP, F .1UF 63DC 5% 5MMLS
CAP, C 2200PF 600V 10% BULK
CAP, C 330PF 100V 10% 5MMLS BU
CAP, C 470PF 1KV 10% BULK
CAP, CA 100PF 100V 10%
CAP, C .22UF 50V 10% .2LS BULK
CAP, C 470P 100V 5
CAP, E 470UF 200V 20% 30X25
C355,C356
18
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INTERMEZZO 1.2s
Electrical Parts List (Cont.)
Part#
Reference Designator
Qty
Description
CF0146
CC0059
C361
C304
1
1
CAP, F 6.8UF 250V 10% 27MMLS
CAP, CA .1UF 100V 20%
Resistors
RC0004
RC0006
RC0061
RC0083
RC0087
RC0116
RC0127
RC0128
RC0135
RC0273
RM0001
RM0002
RM0003
RM0011
RM0024
RM0031
RM0035
RM0037
RM0039
RM0043
RM0065
RM0069
RM0071
RM0073
RM0079
RM0082
RM0083
RM0084
RM0089
RM0093
RM0113
RM0114
RM0118
RM0120
RM0139
RM0148
RM0165
RM0180
RM0276
RM0304
RM0336
RM0339
RM0365
RX0072
RX0074
RX0097
RC0005
R399
R349
R350
R303
1
1
1
1
6
1
1
1
1
2
5
2
2
6
4
5
1
1
1
5
1
2
2
2
2
1
1
1
1
4
4
1
1
3
2
2
1
6
1
2
1
2
1
1
2
1
1
RES, CF 1M0 1/4W 5%
RES, CF 10K 1/4W 5%
RES, CF 4K7 1/4W 5%
RES, CF 100K 1/4W 5%
RES, CF 330R 1/4W 5%
RES, CF 330K 1/4W 5%
RES, CF 30K 1/4W 5%
RES, CF 33K 1/4W 5%
RES, CF 150K 1/4W 5%
RES, ZERO OHM 1/4W
RES, MF 1K00 1/4W 1%
RES, MF 10K0 1/4W 1%
RES, MF 15K0 1/4W 1%
RES, MF 100K 1/4W 1%
RES, MF 2K21 1/4W 1%
RES, MF 3K32 1/4W 1%
RES, MF 4K75 1/4W 1%
RES, MF 51K1 1/4W 1%
RES, MF 5K11 1/4W 1%
RES, MF 6K81 1/4W 1%
RES, MF 200R 1/4W 1%
RES, MF 274R 1/4W 1%
RES, MF 332R 1/4W 1%
RES, MF 392R 1/4W 1%
RES, MF 750R 1/4W 1%
RES, MF 1K21 1/4W 1%
RES, MF 1K50 1/4W 1%
RES, MF 1K65 1/4W 1%
RES, MF 2K43 1/4W 1%
RES, MF 4K53 1/4W 1%
RES, MF 20K0 1/4W 1%
RES, MF 22K1 1/4W 1%
RES, MF 210R 1/4W 1%
RES, MF 30K1 1/4W 1%
RES, MF 267K 1/4W 1%
RES, MF 6K34 1/4W 1%
RES, MF 24K9 1/4W 1%
RES, MF 4K99 1/4W 1%
RES, MF 294K 1/4W 1
R323,R326,R327,R339,R340,R341
R3107
R3106
R376
R363
R313,R395
R344,R370,R371,R372,R3101
R377,R380
R312,R329
R352,R353,R354,R364,R3104,R3105
R315,R317,R331,R333
R320,R321,R336,R337,R369
R3108
R367
R304
R319,R322,R335,R338,R384
R373
R390,R391
R389,R392
R324,R342
R3112,R3113
R368
R345
R3100
R382
R316,R318,R332,R334
R308,R309,R375,R381
R361
R351
R358,R360,R362
R314,R330
R302,R307
R357
R311,R328,R355,R356,R359,R379
R365
R305,R306
R385
R396,R397
R386
R3102
R325,R343
R348
RES, MF 7K87 1/4W 1%
RES, MF 47R 0.6W 1% FLAMEPROOF
RES, MF 10R 0.6W 1% FLAMEPROOF
RES, MF 100R 1/4W 1% FLAMEPRF
RES, MO 100R 1W 5%
RES, MO 4K7 1W 5
RES, MO 3K9 2W 5%
RES, CF 10K 1/2W 5%
R388
19
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INTERMEZZO 1.2s
Electrical Parts List (Cont.)
Part#
Reference Designator
Qty
Description
RC0229
RP0056
RW0022
RC0006
R3103
1
2
4
1
RES, CF 200K 1/2W 5%
POT, 5K 8MM HOR TOP ADJ/COVER
RES, WW 0R1 2W 5%
RP301,RP302
R346,R347,R393,R394
R310
RES, CF 10K 1/4W 5%
Miscellaneous
480022
480028
480084
540130
BF0007
JH0008
JH0016
JH0074
KS0017
KS0019
MT0003
MT0005
FO310
FO309
1
1
1
1
1
1
1
1
2
1
1
2
SUB, #18B 6 1/4 STRIP/187X032
SUB, #18R 6 1/4 STRIP/187X032
SUB, #18G 4 187X032/#6 RING
IND, CM CHOKE 150UH ELYTONE
BEAD, FERRITE
L302
L301
J302
J303
CNCTR, HEADER 5PIN .100CTR
CNCTR, HEADER 2PIN .100CTR
CNCTR, HEADER 8PIN LOCKING .1C
THERMISTOR, 100K @ 25C NTC BUL
THERMISTOR, PTH9L04BD22TS2F510
TERM, FASTON MALE PCMT 250X032
TERM, KWIKDISC .187 X.032 FEMA USED
ON ONE END OF 480022 AND 48028
TERM, FASTON MALE PCMT 187X032
TERM, FASTON MALE PCMT 205X032
MISC, CERAMIC PLATE TO-220 Used on
D324, Q305, Q306, Q307, Q310, Q311, Q312,
Q319, Q320, Q321, U302, U303.
J301
TH302,TH303
TH301
FO304
MT0023
MT0036
MS0017
FO301,FO302,FO308,FO311
FO303
4
1
12
810066
12
MET, HTSNK CLIP HPS SERIES Used on
D324, Q305, Q306, Q307, Q310, Q311, Q312,
Q319, Q320, Q321, U302, U303.
HS0079
JN0003
1
1
SCREW, #6-32X1.25 FL SLOT NYL used on
L302
NUT, HEX NYLON #6-32 used on L302
PCB, POWER SUPPLY BOARD
Semiconductors
DR0086
DS0002
DR0084
QM0055
QB0014
DD0003
DZ0021
D403,D404,D406
D409,D410
D407,D408
Q403,Q404,Q406,Q407
Q401
Q402
3
2
2
4
1
1
8
RECT, 1A 600V ULTRAFAST MUR160
RECT, 100MA 200V SIGNAL 1N3070
RECT, 8A 600V ULTRAF MUR1660CT
MOSFET, IRF740 TO220AB IR ONLY
TRANS, PNP TO92 MPSA92TR
RECT, 1A2 60V DIAC
Z401,Z402,Z403,Z404,Z405,Z406,Z407, Z408
ZENER, 500MW 15V 5% 1N5245B
Resistors
RC0082
RC0138
RM0001
RM0012
RM0071
RM0072
RM0198
RM0340
R403
R422
R401
R405
1
1
1
1
4
4
1
8
RES, CF 100K 1/2W 5%
RES, CF 200K 1/4W 5%
RES, MF 1K00 1/4W 1%
RES, MF 100R 1/4W 1%
RES, MF 332R 1/4W 1%
RES, MF 365R 1/4W 1%
RES, MF 205K 1/4W 1%
RES, MF 22R 1/4W 1% FLAMEPROOF
R406, R409, R413, R416
R408, R411, R415, R418
R402
R407,R410,R414,R417,R419,R420,R425, R426
20
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INTERMEZZO 1.2s
Electrical Parts List (Cont.)
Part#
Reference Designator
Qty
Description
RX0046
Capacitors
R421
1
RES, MO 47K 1W 5%
CC0040
CC0087
CE0013
CF0093
CE0040
CF0050
CF0143
DNI
C409
C421
1
1
3
4
6
4
1
2
CAP, CA 4700PF 100V 10%
CAP, CA .01UF 100V 20%
C415,C416,C418
C406,C408,C412,C414
C401,C402,C403,C422,C423,C424
C426, C427, C430, C431
C428
CAP, E 47UF 50V 20% 5MMLS
CAP, F 4700PF 100V 5% 5MMLS
CAP, E 680UF 200V 30X35 85DEG
CAP, F .1UF 250V 10% 10MMLS
CAP, FY1 4700PF 250V 20%
C428, C429
Miscellaneous
500113
JH0008
KS0021
MT0023
810066
T403,T404
J401
TH401
2
1
1
4
6
XFMR, POWER 1000W YT ETD44 3F3
CNCTR, HEADER 5PIN .100CTR
SURGISTOR, 4R 8A 70J SL154R008
TERM, FASTON MALE PCMT 187X032
MET, HTSNK CLIP HPS SERIES USED ON
D407,D408,Q403,Q404,Q406,Q407
MET, HTSNK PRIMARY LF SERIES USED
ON Q403,Q404,Q406,Q407
MET, HTSNK DIODE LF SERIES USED ON
D407,D408
NUT, HEX KEP #6-32 ZNP USED ON THE
PRIMARY AND DIODE HEATSINKS
SCREW, #6-32X3/8 PAN PHIL BLK USED ON
THE PRIMARY AND DIODE HEATSINKS
FO401,FO402,FO403,FO404
810096
810099
HN0006
HS0060
1
1
4
4
PCB, EMI Filter Board
Semiconductors
DR0038
DS0001
QB0002
DB0006
UV0007
UV0013
DZ0012
D502,D503,D504,D505
D512
Q501
D501
U502
U501
Z502,Z503
4
1
1
1
1
1
2
RECT, 1A 400V GENERAL 1N4002
RECT, 100mA 75V SIGNAL 1N4148T
TRANS, NPN 40V .6A TO92 2N4401
RECT, 8A 400V BRIDGE
VREG, LINEAR TO220 LM7905CT
VREG, +5V 100MA TO220 LM7805CT
ZENER, 500MW 3.9V 5% 1N5228B
Resistors
RC0004
RX0083
R501
R503
1
1
RES, CF 1M0 1/4W 5%
RES, MO 150R 3W 5
Capacitors
CC0059
CE0003
CE0103
CF0057
C507
1
2
2
2
CAP, CA .1UF 100V 20%
CAP, E 2.2UF 50V 20% 105C
CAP,E 100UF 35V 85DEG
CAP,FX.22UF 250V 10%
C505,C506
C503,C504
C501,C502
Miscellaneous
21
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INTERMEZZO 1.2s
Electrical Parts List (Cont.)
Part#
Reference Designator
Qty
Description
480090
480097
540124
500103
810088
JH0008
KV0001
MT0023
SR0038
HN0006
HS0009
1
1
1
1
1
1
1
2
1
1
1
SUB, #18R 9 187X032/1/4STRP
SUB, #18B 9 187X032/1/4STRP
IND, CHOKE CM
L501
T501
XFMR, 60HZ 24V 1.1VA
MET, HTSNK 1X2 BRIDGE For D501
CNCTR, HEADER 5PIN .100CTR
VARISTOR, 275V 100J .6W
TERM,FASTON MALE PCMIT 187X032
RELAY, SPST TV-5 5AMP 24V
NUT, KEP 1/4AF 6-32 ZNP
J502
Z501
FO503,F0504
SW502
SCREW, 6-32 1/2 100 PHIL ZNP
PCB, Input/Feature Board
Semiconductors
UA0003
UA0009
UF0012
DR0038
DS0001
U104
U101,U102,U103
U100
D113,D114,D115,D116,D117,D118
D100, D101, D102, D103, D104, D105, D106,
D107, D108, D109, D110, D111, D112, D119,
D120, D121,D122, D123, D124
D119, D120, D123, D124, D125, D126
Q102
1
3
1
6
OPAMP, QUAD 14PIN DIL LM324N
OPAMP, QUAD 14P DIL TL074/084
FOTO, 6PIN 4N35
RECT, 1A 400V GENERAL 1N4002
RECT, 100mA 75V SIGNAL 1N4148T
19
DS0001
QB0017
QM0035-S
DZ0013
6
1
3
1
RECT, 100mA 75V SIGNAL 1N4148T
TRANS, NPN 150V 0.6A 2N5551
JFET, J111 SELECTED TR ONLY
ZENER, 500MW 5.6V 5% 1N5232B
Q100,Q101,Q103
Z100
Capacitors
CC0024
CC0072
CC0082
CE0003
CE0098
CE0103
CE0116
CF0128
CF0045
CF0088
CF0092
CF0099
CF0112
CF0125
CE0138
dni
C127,C129
C125,C130
C122, C126
C123,C124
C118, C119, C131, C132
C128
C103,C104
C108, C110
C111,C112
C114,C115,C116,C117
C120,C121
C136
C102, C105, C135
C107, C109
C100,C101
2
2
2
2
4
1
2
2
2
4
2
1
3
2
1
5
CAP, CA 1000PF 100V 10%
CAP, CA 100PF 100V 10%
CAP, CA .1UF 50V 20%
CAP, E 2.2UF 50V 20% 105C
CAP, E 22UF 50V 20% 5X11 .2LS
CAP, E 100UF 35V 85DEG
CAP, E 2.2UF 50V BIPOLAR 6X11
CAP, F .033UF 100V 5% 5MMLS
CAP, F .1UF 63DC 5% 5MMLS
CAP, F .01UF 100V 5% 5MMLS
CAP, F 1000P 63V 5% .2LS
CAP, F 0.68UF 63V 5% 5MMLS
CAP, F 100PF 63V 5% 5MMLS
CAP, F .068UF 100V 5% 5MMLS
CAP, E 330UF 100V BP 18X35
(Do Not Insert)
C106, C113, C131, C133, C134
Resistors
RC0003
RC0004
RC0006
R176
R162,R163
1
2
12
RES, CF 1K0 1/4W 5%
RES, CF 1M0 1/4W 5%
RES, CF 10K 1/4W 5%
R153, R154, R155, R156, R157,
R160, R161, R169, R172, R174, R175, R177
R159,R164
RC0037
2
RES, CF 2K0 1/4W 5%
22
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INTERMEZZO 1.2s
Electrical Parts List (Cont.)
Part#
Reference Designator
Qty
Description
RC0039
RC0083
RC0111
RC0115
RC0135
RC0273
RC0277
RC0281
RM0001
RM0002
RM0011
RM0019
RM0075
RM0091
RM0106
RM0113
RM0115
RM0142
RM0195
RM0110
RM0269
RM0290
RM0351
RP0105
RM0403
RC0192
dni
R165,R170,R173
R149,R150,R158
R143,R148
R167
3
3
2
1
1
5
1
1
2
3
5
1
1
2
1
3
1
2
1
4
1
2
1
1
2
2
8
RES, CF 2K2 1/4W 5%
RES, CF 100K 1/4W 5%
RES, CF 680R 1/4W 5%
RES, CF 47K 1/4W 5%
RES, CF 150K 1/4W 5%
RES, ZERO OHM 1/4W
RES, CF 5M6 1/4W 5%
RES, CF 510K 1/4W 5%
RES, MF 1K00 1/4W 1%
RES, MF 10K0 1/4W 1%
RES, MF 100K 1/4W 1%
RES, MF 1K30 1/4W 1%
RES, MF 475R 1/4W 1%
RES, MF 3K65 1/4W 1%
RES, MF 14K0 1/4W 1%
RES, MF 20K0 1/4W 1%
RES, MF 23K7 1/4W 1%
RES, MF 287K 1/4W 1%
RES, MF 187K 1/4W 1%
RES, MF 17K4 1/4W 1%
RES, MF 93K1 1/4W 1%
RES, MF 143K 1/4W 1
RES, MF 9K53 1/4W 1%
POT, B50K QUAD KNURL SHAFT
RES, MF 54K9 1/4W 1%
RES, CF 2K0 1/2W 5%
(Do Not Insert)
R168
R126,R130,R135,R141,R146
R171
R166
R151,R152
R110,R111,R112
R104, R105, R106, R107, R116
R115
R137
R108,R109
R113
R118,R119,R120
R114
R139,R144
R133
R122,R124,R127,R128
R136
R142,R147
R117
R123
R101, R103
R100, R102
R121, R125, R129, R131,
R134, R138, R140, R145
Miscellaneous
JC0052
JC0064
JC0176
JH0008
JH0074
SR0006
J101
J105
J100
J102
1
1
1
1
2
2
CNCTR, RCA QUAD JACK
DC POWER JACK 2MM DIA
8X BINDING POSTS GOLD KNURL
CNCTR, HEADER 5PIN .100CTR
CNCTR, HEADER 8PIN LOCKING .1C
SWITCH, CAP FOR SR0005 USED ON S101 &
S102
J103,J104
SR0017
SR0041
SR0042
S101,S102
S100
2
1
1
SWITCH, 2 POLE 2PDT
DPST PUSH SWITCH TV-8
SWITCH CAP, 8.8X10.5MM CYL BLK
PCB, RABOS
Semiconductors
UA0009
UA0010
QB0017
QM0035-S
QB0017
U200
U201
Q204
Q201,Q202,Q205
Q200
1
1
1
3
1
OPAMP, QUAD 14P DIL TL074/084
OPAMP, DUAL 8PIN DIL TL082
TRANS, NPN 150V 0.6A 2N5551TR
JFET, J111 SELECTED TR ONLY
TRANS, NPN 150V 0.6A 2N5551
23
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INTERMEZZO 1.2s
Electrical Parts List (Cont.)
Part#
Reference Designator
Qty
Description
Resistors
RC0148
RM0001
RM0002
R210
R207,R208
R200,R201,R214,R216,R220,
1
2
10
RES, CF 10M 1/4W 5%
RES, MF 1K00 1/4W 1%
RES, MF 10K0 1/4W 1%
R225,R228, R229,R230, R233
RM0003
RM0012
RM0024
RM0031
RM0076
RM0078
RM0080
RM0091
RM0260
RM0271
RM0281
RM0315
RM0369
RM0370
RM0402
RP0087
RP0088
R219, R224
R215
R203
R231
R204
R209
R217,R223
R211
R232
R206
R222,R227
R212
R221,R226
R202
R234
R205,R213
R218
2
1
1
1
1
1
2
1
1
1
2
1
2
1
1
2
1
RES, MF 15K0 1/4W 1%
RES, MF 100R 1/4W 1%
RES, MF 2K21 1/4W 1%
RES, MF 3K32 1/4W 1%
RES, MF 562R 1/4W 1%
RES, MF 680R 1/4W 1%
RES, MF 825R 1/4W 1%
RES, MF 3K65 1/4W 1%
RES, MF 1M0 1/4W 1%
RES, MF 110K 1/4W 1%
RES, MF 6K04 1/4W 1
RES, MF 2K67 1/4W 1%
RES, MF 340R 1/4W 1%
RES, MF 9K31 1/4W 1%
RES, MF 11K5 1/4W 1%
POT, A10K DUAL 12MM HOR SEL
POT, C10K DUAL 12MM HOR SEL
Capacitors
CE0003
CF0045
CE0003
CF0045
C203,C204
C200,C201,C202
C210,C211
2
3
2
5
CAP, E 2.2UF 50V 20% 105C
CAP, F .1UF 63DC 5% 5MMLS
CAP, E 2.2UF 50V 20% 105C
CAP, F .1UF 63DC 5% 5MMLS
C204,C205,C206,C207,C208
Miscellanous
JH0074
J200
1
CNCTR, HEADER 8PIN LOCKING .1C
PCB, Volume Board
RC0273
RP0097
RX0096
RP0106
HS0047
R237
R235
R236
1
1
1
1
4
RES, ZERO OHM 1/4W
POT, A10K SINGLE/BRKT D SHAFT
RES, MO 2K2 1W 5%
POT, KNOB INT 1.2 LEVEL
SCREW, #6-32X3/4 PAN PHIL BLK TO MOUNT
VOLUME BOARD TO RABOS BOARD
MISC, GASKET Used on RABOS Housing
STANDOFF, 3/8 SPACER NYLON
STANDOFF, 14MM LED 2PIN
INTERMEZZO 1.2 RABOS HOUSING
CNCTR, FEM-FEM HARN 8P 18 SHIELD
MISC, RUBBER GROMMET RABOS HSG FOR
SEALING RABOS HOUSING
MM0070
MZ0034
MZ0036
RABOS CUP 1.2
C0186
MM0075
1
4
1
1
1
1
DL0014
D200
1
LED, 3MM BICOLOR RED/GR
24
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INTERMEZZO 1.2s
Electrical Parts List (Cont.)
Part#
Miscellaneous
480033
Reference Designator
Qty
Description
3
SUB, #18R 4 1/4 187X032/187X032 1PC. IEC
LIVE TO FUSE HOLDER; 1PC. FUSE
HOLDER TO SWITCH; IPC. IEC NEUTRAL TO
SWITCH
480104
1
SUB, #16X2 24 205X032/250X032 SPEAKER
WIRE
930052
930053
FH0006
FS0027
HS0047
1
1
1
1
CUP ENCLOSURE
U-BRACKET
FUSE, HOLDER PANEL MT
FUSE, 6A 250V 1.25X.25 GLASS
SCREW, #6-32 3/4 PAN PHIL BLK 4PCS.
USED TO MOUNT LINEAR BOARD; 4 PCS
USED TO MOUNT POOWER SUPPLY; 4 PCS
USED TO SCREW VOLUME BOARD ONTO
RABOS BOARD
12
HS0057
HS0060
3
SCREW, #8-32X1/2 PAN PHIL BLK USED TO
ATTACH U-BRACKET TO ENCLOSURE
SCREW, #6-32 X 3/8 PP BLACK 4PCS USED
TO MOUNT EMI PCB IN HOUSING; 4 PCS
USED TO MOUNT EMI HOUSING U-
BRACKET; 6 PCS TO SECURE PANEL TO
ENCLOSURE
14
HS0078
2
SCREW, #4 HI-LOW PAN PHIL BLK USED TO
SECURE RABOS BOARD IN HOUSING
INTERMEZZO 1.2 MAIN ENCLOSURE
INTERMEZZO 1.2 MAIN PANEL
CNCTR, 5PIN FEM-FEM HARNESS 7 J401
ON POWER SUPPLY TO J302 ON LINEAR
CNCTR, AC IEC SOCKET .250 2PIN
CNCTR, 5-PIN FEM-FEM HARNESS
SHIELDED 14 J502 ON EMI TO J102 ON
FEATURE
INTERMEZZO 1.2H
INTERMEZZO 1.2P
JC0079
1
1
1
JC0129
JC0179
1
1
JC0180
JC0181
1
1
CNCTR, 8-PIN FEM-FEM HARNESS
SHIELDED 18 J104 ON FEATURE TO J200
ON RABOS
CNCTR, 8-PIN FEM-FEM HARNESS
SHIELDED 18 J103 ON FEATURE TO J301
ON LINEAR
JC0182
MZ0042
1
4
2-CONDUCTOR AC LAMP CORD 8
4X187X032
STANDOFF, 3/8 #6-32 NYLON HEX USED TO
MOUNT LINEAR BOARD
SR0032
HS0054
1
7
SWITCH, ROCKER TV5
SCREW, #4-1/2 TYPE AB PP BLK 6 PCS.
USED TO SECURE BINDING POSTS TO
PANEL; 1 PC. USED TO SECURE RCA
JACKS TO PANEL
HS0088
1
SCREW, #8-32X1.3/4 PAN PHIL BL USED TO
MOUNT U BRACKET TO ENCLOSURE
25
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INTERMEZZO 1.2s
Electrical Parts List (Cont.)
Part#
Reference Designator
Qty
Description
HS0090
2
SCREW, M3X16MM PAN PHIL BLK TO ALIGN
SR0041
HW0004
HW0040
8
1
WASHER, SPLIT #6 ZNP TO MOUNT
POWER SUPPLY AND LINEAR BOARD
WASHER, FLAT #8 NYLON 3/8
USED TO
MOUNT U BRACKET TO ENCLOSURE
MISC, CUP GASKET INTERMEZZO 1.2
MISC, RUBBER GROMMET FOR 5PIN FOR
SEALING ENCLOSURE OF THE 5PIN CABLE
HOLE
MM0071
MM0073
1
1
MM0074
MZ0003
MZ0043
RP0057
1
4
2
1
MISC, RUBBER GROMMET 2X8 PIN FOR
SEALING ENCLOSURE OF 2X8 PIN CABLE
STANDOFF, 6-32 3/8 ROUND AL 4PC TO
SUPPORT POWER SUPPLY
STANDOFF, .12ID .25OD .37L PVC
ALIGN SR0041
TO
POT, KNOB CR00-20MB-16H
26
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INTERMEZZO 1.2s
AC Filter
27
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INTERMEZZO 1.2s
Feature
28
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INTERMEZZO 1.2s
RABOS
29
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INTERMEZZO 1.2s
Power Supply
30
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INTERMEZZO 1.2s
Linear Board
31
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INTERMEZZO 1.2s
Power Supply
32
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INTERMEZZO 1.2s
Linear Board
33
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INTERMEZZO 1.2s
Integrated Circuit Diagrams
-5V TO220,
7905CT,
REGULATOR
U303, 502
TRANS, 250V
TO220,TIP47
Q319
1. GROUND
RT/CT
2. INPUT
3. OUTPUT
+5V TO220,
7805CT
REGULATOR
U302, 501
JFET, J111,
Q100,101,103,201,
202, 205, 301
1 2 3
B C E
FOTO, MOC3012, 4N35
U304, 100
1. D
2. S
3. G
1. INPUT
2. GROUND
3. OUTPUT
OPAMP, DUAL 8
PIN, TLO82
U201
3
1 2
TRANS, PNP, 2N5401TR,
TO92, MPSA92TR
Q302, 304, 309, 313
316, 324, 401
MOSFET, IRF640/740,
IRF9640, TO220AB
Q305, 310, 320, 321
306, 307, 311, 312,
403, 404, 406, 407
OPAMP, QUAD, 14 PIN,
LM324N, TL074/84
U306, 301, 104, 101, 102, 103,
200
TRANS, NPN, TO92, 2N4401, 2N5551TR,
2N5551, 2N555,
Q314, 315, 317, 303, 308, 322, 323
501, 102, 204, 200
1. G
2. D
3. S
3
1 2
34
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Intermezzo 1.2s
Schematics
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Intermezzo 1.2s
Schematics
36
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Intermezzo 1.2s
Schematics
37
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Intermezzo 1.2s
Schematics
38
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Intermezzo 1.2s
Schematics
39
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Intermezzo 1.2s
Schematics
& RABOS Gain PCB
40
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Intermezzo 1.2s
Schematics
42
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