Infinity IL60 L-R User Manual
Interlude Series
IL60 L/R
Powered Loudspeaker
Service Manual
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 11797
REV 5 5/2005
IL60
CONTENTS
SPECIFICATIONS …….……………………………………………….3
DETAILED SPECIFICATIONS …………………….…………………4
CONTROLS and CONNECTIONS …………………….….…………6
OPERATION……………………………………..………..…….……..10
BASS OPTIMIZATION SYSTEM……………………….….…………10
MECHANICAL PARTS LIST…………………….……………………12
EXPLODED VIEW ……………………………………….……………13
EXPLODED VIEW OF AMPLIFIER…………………….……………14
SERVICE TIPS……………………………..……………………….…15
TEST SET UP PROCEDURE……………………..…….……………16
IL60 ADJUST BIAS PROCEDURE………………..…………………17
SERVICE BULLETIN INF2000-04…….…………….….……………18
SERVICE BULLETIN INF2001-04…….…………….….……………19
TECH TIP INFTT2003-03…….…………….…………………………21
PACKAGING …………………………….………………………….…22
PRINTED CIRCUIT BOARD DIAGRAMS………………..…………23
ELECTRICAL PARTS LIST (120v)…………………….….…………27
INTEGRATED CIRCUIT DIAGRAMS ………………………………33
WIRING DIAGRAM CROSSOVER NETWORK SCHEMATIC..….34
IL60 SCHEMATICS…………..………….……………………………35
2
IL60 L/R
3
Specifications
IL60 L/R Frequency Response: 28Hz - 22,000Hz (±3dB)
Recommended Amplifier Power Range 15-175 watts*
Subwoofer Amplifier Output: 500 watts (In to 8Ω from 20 Hz - 100Hz
with no more than 0.1% THD)
Sensitivity: 89dB (2.83V @ 1 meter)
Nominal Impedance: 8Ω
Crossover Frequencies: 150Hz; 500Hz,2800Hz, 24dB/octave
Low-Frequency Driver: 12" C.M.M.D., magnetically shielded
Mid-Bass Driver: 6-1/2” C.M.M.D., magnetically shielded
Midrange Driver: 4” C.M.M.D., magnetically shielded
High-Frequency Driver: 1” C.M.M.D., magnetically shielded
Dimensions (H x W x D): 48" x 9-1/4" x 17-1/4"
(1219mm x 235mm x 438mm)
Weight: 75 lb (34kg)
* The maximum recommended amplifier power rating will ensure proper system headroom to allow
for occasional peaks. We do not recommend sustained operation at these maximum power levels.
Detailed Specifications
IL60 L/R
4
IL60 L/R
5
Detailed Specifications (Cont.)
IL60 L/R
6
Controls and Connections
IL60 L/R
7
Controls and Connections
SPEAKER
OUTPUTS
+- +-
SPEAKER
OUTPUTS
+- +-
(ONE CHANNEL SHOWN)
AMPLIFIER/RECEIVER
LEFT RIGHT
AMPLIFIER/RECEIVER
SPEAKER OUTPUTS
(ONE CHANNEL SHOWN)
PREAMP OUTPUTS AMPLIFIER INPUTS
L
RR
L
®
O
+
1. LOOSEN TERMINALS
2. INSERT BARE END:
TIGHTEN TERMINALS
3. SET
INPUT SUB
TO "LINE LEVEL"
4. SET
LOW-PASS FILTER
"ON"
METHOD 2
NO STRIPE = -
BLACK = -
STRIPE= +
RED = +
O
00354
+
®
00359-2
1. LOOSEN TERMINALS
2. INSERT BARE END:
TIGHTEN TERMINALS
3. SET
INPUT SUB
TO "SPEAKER"
4. SET
LOW-PASS FILTER
"ON"
METHOD 1
NO STRIPE = -
BLACK = -
STRIPE= +
RED = +
AC CORD
AC CORD
The Interlude IL50 and IL60 offer unprecedented flexibility for connecting the
system to any type of audio or home-theater system. Consult the table at right
to determine which system description most closely matches your own, then
follow the hook-up method corresponding to that system.
If none of these system configurations seem to match yours, consult your dealer
or Infinity customer service for direction on how best to hook up your system.
For methods 2, 3a, 3b and 4, make sure all bass-management features are
properly set. The Audio channels should all be set to “Small” or “High-Pass”
and the subwoofer set to “On.”
2-Channel receiver or integrated amplifier 1
that has no subwoofer output or
Pre-out/Main-In connectors
2-Channel receiver or integrated amplifier 2
with preamp output and input connectors
2-Channel system with separate preamplifier 2
and power amplifier
Dolby* Pro Logic* with THX®, Dolby Digital, 3a
or DTS®receiver with a filtered subwoofer
(or LFE) output connector
Dolby Digital or DTS processor with separate 3b
power amplifiers or multichannel amplifier
Non-THX certified Dolby Pro Logic receiver 4
with full-range subwoofer outputs
System Type
Connection
Methods
4
3
4
3
IL60 L/R
8
METHOD 3a
NO STRIPE = -
BLACK = -
STRIPE= +
RED = +
O
00354
+
®
O
+
®
STRIPE = +
METHOD 3b
BLACK = -
NO STRIPE = -
RED = +
Controls and Connections (Cont.)
4
4
3
3
IL60 L/R
9
Controls and Connections (Cont.)
+-
SUBWOOFER
OUTPUTS
(ONE CHANNEL SHO WN)
RECEIVER
SPEAKER
OUTPUTS
L
R
O
+
®
1. LOOSEN TERMINALS
2. INSERT BARE END :
TIGHTEN TERMINALS
3. SET
INPUT SUB
TO "LINE LEVEL"
4. SET
LOW-PASS FILTER
TO "ON"
METHOD 4
STRIPE = +
NO STRIPE= -
BLACK = -
RED = +
AC CORD
00395-4
Final Positioning
After correctly connecting the loudspeaker and
verifying that both the subwoofer and main section
portions are playing, it is time to optimize the
system for your particular listening room.
Earlier, you placed the loudspeakers in their general
location. Finding the exact location for optimum
performance sometimes only involves moving the
speakers a few inches in any direction. We urge
you, therefore, to experiment with placement until
your speakers deliver their full potential. When the
speakers are moved inward (toward each other)
there is generally better focus of instruments and
vocalists; however, moving the speakers too close
together can reduce the spaciousness of the stage
effect and you may need to experiment with the
trade-off between focus and imaging. If your
listening room is larger than average and your
listening position is relatively far from the speakers,
wider placement of the speakers may be required.
3
4
IL60 L/R
10
Operation/Bass Optimization System
TM
IL60 L/R
11
Bass Optimization System
TM
(Cont.)
NOTE:It is important that you make the same adjustments to both loudspeakers.
Set the Bass Optimization System Bandwidth adjustments to a middle position (10 clicks from a
fully clockwise position) and set Level adjustments for a –6dB (8 clicks from a fully clockwise
position). Then,while the music is playing,sit in your favorite chair and have somebody else slowly
adjust the Frequency controls from fully clockwise to fully counter-clockwise. At a certain
frequency, you should hear the problem lessen and the overall bass performance improve. When
you are satisfied that you have found the best frequency, have your assistant vary the Levels
slowly up and down until you have maximized the improvement.If you have really keen ears, you
can also have the Bandwidth controls adjusted for maximum benefit.
While the Bass Optimization System allows the listener to fine-tune the bass response to sound best
in a particular room,some listeners don’t have the skill or desire to adjust their system by ear. In
order to facilitate quicker and more accurate results, Infinity has developed an optional test and
measurement kit that allows the user to perform a series of measurements and aids him/her in
properly setting the Bass Optimization System controls. With the addition of this kit,the Bass
Optimization System becomes truly room-adaptive.
The kit consists of the following:a test CD, a sound-level meter that is specifically calibrated for low
frequencies, and something we call a “Q-Finder, ”a device to help find the width of the measured
curve and, finally, a measurement template. It works as follows. The listener plays the tones from
the test CD and records the relative output level of each test tone, using the sound-level meter, on
the provided measurement template. After all the tones are complete, the template contains a
response curve for the frequencies below 100Hz. The user simply notes the frequency of the largest
bass peak,calculates the correct amount of attenuation,and uses the “Q-Finder” to determine the
width of the curve. These three values are dialed into the Bass Optimization System controls located
on the speaker.The entire process takes less than twenty minutes.
If your dealer does not stock the Bass Optimization System test and measurement kit,you may
purchase it directly from Infinity. U.S. residents can visit our Web site at www.infinitysystems.com or
call 1-800-553-3332.Canadian residents should contact their dealer or call 1-800-567-3275.
Ask for Infinity part number 335852-002.
11
10
9
10
11
IL60 L/R
12
Mechanical Parts List
IL60 Complete Amplifier Ass’y N/A
Grille Set (one Upper and one Woofer):
Grille, Black, Left 336440-072
Grille, Black, Right 336440-071
Grille, Midnight Blue, Left 336440-052
Grille, Midnight Blue, Right 336440-051
Grille, Rich Burgundy, Left 336440-062
Grille, Rich Burgundy, Right 336440-061
Grille, Gray, Left 336440-042
Grille, Gray, Right 336440-041
Mid-Bass, 6-1/2” C.M.M.D., shielded, 4.5 ohms±10% 335741-001
Midrange, 4” C.M.M.D., shielded, 4.6 ohms±10% 335812-002
Woofer, 12”, C.M.M.D., shielded, 3.4 ohms±10% 336056-001
Tweeter, 1”, C.M.M.D., shielded, 3.5 ohms±10% 335225-002
Volume Control Assembly (Left) 336250-002
Volume Control Assembly (Right) 336250-001
Passive Crossover Network 336500-001
Port Tube 336799-001
Pedestal 336255-001
Cup, Grille, (12) 333249-003
Baffle, Front, Left 336442-002
Baffle, Front, Right 336442-001
Bump-On, Foot (8) 330104-001
Midrange Cup 335809-001
Trim Ring, Woofer 336259-001
PACKAGING
Owners Manual, IL50,60 335832-001
Grille Option Literature 336503-002
Grille Assembly See Options Above
Pad, End, Bottom/L 336488-003
Pad, End, Bottom/R 336488-002
Pad, End, Top 336488-001
Protective Corners (4) 335692-003
Outer Carton 336489-001
Survey Card 330033-001
Warranty Card 335841-001
Spike Foot Set 331360-001
Power cord 120v US (15’) 336658-115
RABOS screwdriver w/bag 335848-002
IL60 L/R
13
GRILLE, BLACK, LEFT 336440-072
GRILLE, BLACK, RIGHT 336440-071
GRILLE, MIDNIGHT BLUE, LEFT 336440-052
GRILLE, MIDNIGHT BLUE, RIGHT 336440-051
GRILLE, RICH BURGUNDY, LEF T 336440-062
GRILLE, RICH BURGUNDY, RIGHT 336440-061
GRILLE, WARM PLATINUM, LEFT 336440-042
GRILLE, WARM PLATINUM, RIGHT 336440-041
GRILLE, WOOFER,
Part of Set - See
Upper Grille Options
GRILLE CUP, (3)
333249-003
GRILLE CUP, (8)
333249-003
GRILLE
CUP, (1)
333249-003
SCREW, (3)
#8 x 1" PPH, BLK
900101-016
SCREW, (3)
#8 x.75" PPH BLK
900101-012
SCREW, (12)
#8 x.75" PPH BLK
900101-012
SCREW, (4)
#8 x.75" PPH BLK
900101-012
SCREW, (6)
#6 x .75" PPH BLK
903401-012
SCREW, (4)
#4-24"x .375 PPH BLK
907801-006
SPIKE (2)
331360-001
BUMP-ON (8)
330104-001
PEDESTAL,
336255-001
PORT TUBE,
336799-001
(ROTATED)
VOLUME
CONTROL ASS'Y
w/CABLE,
336250-001,R
336250-002,L
AMPLIFIER,
NOT FOR SALE
MIDRANGE
TRANSDUCER,
335812-002
MIDBASE
TRANSDUCER
335741-001
ISOLATION
CUP
335809-001
TWEETER,
335225-002
BAFFLE,
336442-001, R
336442-002, L
WOOFER,
336056-001
TRIM
RING,
336259-001
00415
SCREW, (8)
#6 x .75" PPH BLK
903401-012
SCREW, (4)
#6 x .75" PPH BLK
903401-012
SCREW, (10)
#8 x .75" PPH BLK
900101-012
CABINET
NOT FOR SALE
CROSSOVER
NETWORK
336500-001
Exploded View
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