Infinity Infinitesimal IV - Specifications; Contents; Product Identification

CONTENTS
SPECIFICATIONS/PRODUCT ID……………..…….…….……….……………1
INSTALLATION/CONTROLS…………………..…….……………..……………2
OPERATION………………………………………..………………..…………….4
CIRCUIT DESCRIPTION…………………………..………………..……………5
THEORY OF OPERATION…………………………..…………….……………11
DETAILED TROUBLESHOOTING…………………….………….……………18
EXPLODED VIEWS………………………………………………….…………..24
MECHANICAL/ELECTRICAL PARTS LISTS……………………….…………26
PCB DRAWINGS…………………………………………………………………33
POWER TRANSFORMER………………………………………………………35
SEMICONDUCTOR PINOUTS…………………………………………………36
SCHEMATICS (Infinitesimal IV/SSW-10/Servo Controlled Subwoofer)……37
SCHEMATICS (RS Subwoofer)……………………………………….. ………38
PACKING (Infinitesimal IV/SSW-10/Servo Controlled Subwoofer)……..…… 39
SPECIFICATIONS
Frequency Response 40 - 200 Hz
Crossover Frequency 40 - 200 Hz (Continuously Variable)
Output Power 100 Watts (RMS) into 2 ohms
THD (@ 75 W/100 Hz) < .l %
Signal to noise ratio > 80db
Input Impedance 25K Ω
Driver 10" (254mm) IMG Woofer - (DCR = 1.8 Ω)
Inputs Line Level and Speaker Level
Outputs
Infinitesimal IV/SSW-10/Servo Controlled Subwoofer Full Range Speaker
RS Subwoofer 180 Hz High Pass Filter
Dimensions
Infinitesimal IV/SSW-10/Servo Controlled Subwoofer 13.25" x 13.25" x 13" (337 x 337 x 330mm)
RS Subwoofer 23.25" x 7.25" x 13.25" (59x18.5 x 33.5mm)
Weight (Infinitesimal IV/SSW-10/Servo Controlled Subwoofer) 34 lbs. (15.4kg)
PRODUCT IDENTIFICATION This service manual covers the following models:
SSW-10 subwoofer
Infinitesimal IV subwoofer
Servo Controlled subwoofer
RS Subwoofer (actually a different product, but the amplifier is nearly identical)
The Infinitesimal subwoofer, Infinitesimal IV Subwoofer, SSW-10, or Servo Controlled Subwoofer may
be identified from the owner's manual, outer carton or amplifier plate. It is a square black cube and is ported.
Alternately, the RS Subwoofer has a distinct rectangular enclosure. The differences in the RS Subwoofer
include a non-removable power cord, two high level input terminals, and a passive high-pass filter for satellite
speakers (active when the high level input terminals are utilized). There is no port.
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