Infinity IRSV System User manual

IRSV SYSTEM
SERVICE MANUAL
Infinity Systems Incorporated
250 Crossways Park Dr.
Woodbury, New York 11797
Rev0 5/2002

- CONTENTS -
SPECIFICATIONS ……..………………………………….……………..2
FEATURES……..……………………..……..………….….……………..3
IMPEDANCE MATCHING..……………….…… ……..…….....….…….5
SET-UP GUIDE……………….…………..…………..…….…………….7
OPERATION ….………..…………..………………………………..14
ADJUSTMENTS/CONTROLS..……………….…… ….……..….…….15
SERVICE SETTINGS/ADJUSTMENTS/TIPS…………………………19
MECHANICAL PARTS LIST ..……………….…… ……..…..….…….20
PASSIVE CROSSOVER SCHEMATIC..………..………..……...…….21
PASSIVE CROSSOVER WIRING..…………….….…..………...…….22
SYSTEM WIRING DIAGRAM..…………………………………...…….23
ELECTRONIC CROSSOVER SCHEMATIC………………..…………24
BASS AMPLIFIER SCHEMATIC …………...….…………..………….25

IRSV SYSTEM SPECIFICATIONS
Low Frequency (6) 12” IMG (4 ohm DCR) per tower wired in parallel
Midrange Frequency (12) Emims per mid-twt panel
High Frequency (24) Emits (Front) per mid-twt panel
(12) Emits (Rear) per mid-twt panel
Nominal Impedance 4 ohms (per mid-twt panel)
DCR of Woofer Tower 0.66 ohms
Finish Rosewood or Black
Dimensions:
Woofer tower 20 ¾ x 28 3/8 x 90” (52.7 x 73 x 228cm)
Mid/twt Panel 47 x 17 x 90” (119 x 43 x 228cm)
Base Footprint 38 x 12” (96.5 x 30.5cm)
Weight (System) 1500 lbs. (681 kg)
Special Features Monster Cable
ARC wire
Solen capacitors
Wonder capacitors
Frequency response 15Hz – 45kHz ±2 dB
Crossover Frequencies 70Hz (Variable)
4500 Hz
Crossover Controls Tweeter and Upper Midrange Level
Mid/Twt Amplifier Requirements 100-500 watts/ch RMS
Bass Amplifier Power 2000 watts/ch RMS
Production History Introduced in 1987
Discontinued in 1996
Retail price 1996 $60,000.00

Service Settings/Adjustments/Tips
IRSV Amplifier (120v) A036-3089 or (240v) A036-3096
Potentiometer Settings (Nominal)
Most versions have small arrows in the slot of each
potentiometer. See illustration for direction of
arrows for Nominal Setting. Bottom pot should
always be maximum CW.
IRS amplifier output can be “trimmed” in relation to
each other by powering system up with amp cover
removed, attaching DMM to main amp terminals
and comparing output voltage, driving with 50Hz
signal to achieve approx. 5.0 volts at main amp
terminals. If amp voltages are not equal on both
towers, carefully adjust (raise/lower) Center
ACCELERATION/FEEDBACK pot on one unit until
they are.
Connect an AC voltmeter to these test points to
assure high speed of cooling fan is working.
With AC meter attached to these points with COLD
system, voltage should be less than 100v. Drive
system at 20-30Hz either into woofer tower load or
1-2 ohm 500 watt resistor bank on bench at
reasonably high power. When system heats
sufficiently, warp switch should audibly trip and
raise voltage to over 100v.
With AC ammeter on 120v power cord, nominal AC
current should = 0.40A with no signal input.
If not adjust at indicated test point.
Line Fuse ratings
120v = 12 amps slo-blo
240v = 8 amps slo-blo
Control Woofer is the third woofer from the bottom
in the tower