INTERMEZZO™ 4.1t
IMPORTANT SAFETY PRECAUTIONS
Read First!
1.Read Instructions. All the safety and operating instructions should be read before the product is operated.
2.Retain Instructions. The safety and operating instructions should be retained for future reference.
3.Heed Warnings. All warnings on the product and in the operating instructions should be adhered to.
4.Follow Instructions. All operating and use instructions should be followed.
5.Cleaning. Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.
6.Water and Moisture. To reduce the risk of fire or electric shock, do not use this product outdoors or near water–for example, near a bathtub, wash bowl, kitchen sink or laundry tub; in a wet basement; near a swimming pool; or the like.
7.Accessories. Do not place this product on an unstable cart, stand, tripod, bracket or table.The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturer’s instructions, and should use a mounting accessory recommended by the manufacturer.
8.Power Sources. This product should be operated only from the 230 AC power source indicated on the marking label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company.
9.Power-Cord Protection. Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product.
10.Nonuse Periods. The power cord of the product should be unplugged from the outlet when left unused for long periods of time.
11.Overloading. Do not overload wall outlets or extension cords, this can result in a risk of fire or electric shock.
12.Object and Liquid Entry. Never push objects of any kind into this product through openings, as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.
13.Servicing. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltage or other hazards.
Unplug this product from the wall outlet and refer servicing to qualified service personnel.
14.Wall or Ceiling Mounting. The product should be mounted to a wall or ceiling only as recommended by the manufacturer.
15.Heat. The product should be situated away from heat sources such as radiators, heat registers, stoves or other products (including amplifiers) that produce heat.
INTERMEZZO 4.1t |
iii |
INTERMEZZO 4.1t OWNER’S GUIDE
iii |
Important Safety Precautions |
1 |
Technology |
1 |
Ceramic Metal Matrix Diaphragms™ (C.M.M.D.) |
1 |
Transducers |
1Room-Friendly Acoustical Design
2Amplifier
2 Completing the Experience
2Unpacking the Product/Included Accessories
3Placement
4Controls and Connections
5Connection Methods 1–4
8Room Adaptive Bass Optimization System™ (R.A.B.O.S.)
9Contents of the R.A.B.O.S.Test CD
9 |
R.A.B.O.S. Sound-Level Meter (RSLM) |
14 |
What You Measure, What To Do |
17Adjusting the R.A.B.O.S. Equalizer
18Final System Balance
19Maintenance and Service
20Specifications
21R.A.B.O.S. Measurement Templates
23 Notes
iv INTERMEZZO 4.1t
Infinity Intermezzo 4.1t
This loudspeaker system represents a refinement of the principles that have guided Infinity’s loudspeaker designs for more than 30 years. Loudspeaker development is generally an evolutionary process. New models usually perform slightly better than the ones they replace. Over time, the subtle improvements add up and, when the latest model is compared to a loudspeaker that is ten or twelve years old, the disparity is unmistakable.
Every once in a while, a loudspeaker is developed that transcends this pattern – its performance so remarkable, its design so stunning, its technology so advanced, it can truly be described as revolutionary.The new Infinity Intermezzo 4.1t loudspeaker system is an elegant case in point.
The Intermezzo 4.1t system is a 4-way loudspeaker with its mid-bass, midrange and high-frequency-driver array mounted atop a 12", 850-watt powered subwoofer. With its proprietary Ceramic Metal Matrix Diaphragms™, powerful BASH® amplifiers and sophisticated, yet refined, dividing networks, the Intermezzo 4.1t will breathe life into any musical or cinematic performance and touch the soul of the listener.
The Intermezzo 4.1t is the consummation of Infinity’s quest to apply“science in the service of art.”
TECHNOLOGY
Transducers
In addition to ceramic diaphragms, all the transducers incorporate magnetic shielding and rigid cast-frames that, through our FEA computer modeling and scanning-laser-vibrometer measurements, have been optimized to reduce resonances.This ensures minimal distortion and incomparable performance.
The 12" low-frequency transducer is the embodiment of uncompromised driver design.The ceramic-metal-matrix cone is attached to a rigid cast-aluminum frame, through a compressionmolded, butyl-rubber surround.The motor assembly incorporates a vented polepiece for maximum heat dissipation with negligible air turbulence.The frame itself is also vented to further improve heat dissipation.The motor structure uses a 3", edge-wound, copper voice coil for high power handling and minimal power compression.
To maximize system performance, the flat-spider assembly and the cone are mounted to different points on the fiberglass former, increasing reliability and reducing distortion, especially at high output levels. An extra-thick top plate and dual-magnet structure are utilized to allow for huge peak-to-peak driver excursions, with significantly lower distortion and a more linear frequency response than is true of typical drivers.
When installed in its heavily braced and reinforced elliptical enclosure and coupled with a powerful 850-watt amplifier and
™
Intermezzo 4.1t system to deliver bass that will cleanly and naturally reproduce the lowest notes of a pipe organ or the loudest explosions from last summer’s hottest action films.
Room-Friendly Acoustical Design
Driver quality is not the only requirement for exceptional performance. Infinity’s engineers understand that the room in which the loudspeaker is placed can greatly affect its performance.To ensure that Intermezzo 4.1t loudspeakers will sound exceptional in even the most unexceptional listening environment, Infinity has developed two ways to solve most roomgenerated problems.The first is its proprietary Room Adaptive Bass Optimization System™. With a single band of parametric equalization, the Intermezzo 4.1t can be adjusted to tame any problematic room bass resonances below 80Hz.
There is a completely different set of room-related problems that has to do with loudspeaker directivity and that can affect the reproduction of mid and high frequencies. One characteristic of forward-facing loudspeakers is that the sound output lessens as one moves away from the principal axis.This happens both horizontally and vertically and it means that radiated sounds that are reflected from the floor, ceiling and side walls will be lower in amplitude than direct, forward sound.This is usually a good thing. But, if the dispersion characteristics of the loudspeaker are different at various frequencies, the sound quality of the reflected sounds will be very different both from each other and from the
INTERMEZZO 4.1t |
1 |
first (i.e., direct) sound.The ears don’t ignore these differences; they perceive them as coloration, or as sound quality that’s been degraded.The Intermezzo 4.1t has been carefully designed to maintain a directional pattern that is similar at every important angle, on and off axis.The positive result is that both direct and reflected sounds arriving at the listeners’ ears have similar timbral signatures.
Amplifier
BASH® is an amplifier-power-supply technology that increases efficiency by reducing power dissipation in the output section.The BASH topology uses a high-efficiency, fast-response, switch-mode power supply that provides the main voltage rails for a linear ClassAB amplifier. By varying the output of the power supply with the audio signal being amplified, a constant voltage drop across the output transistors of the linear amplifier can be maintained.This means that the power dissipation in the output transistors is greatly reduced.
The result is an extremely efficient audio amplifier that does not compromise audio performance.
Completing the Experience
The technology and performance that make Infinity Intermezzo loudspeakers ideal for music listening also make them the perfect digital multichannel loudspeaker system.To complete a hometheater system, Infinity has designed, to the same precise standards as the Intermezzo 4.1t, a matching 3-way center-channel loudspeaker, the Intermezzo 3.5c. In addition, Intermezzo 2.6 bookshelf loudspeakers are available for use as full-range surround channels.
We hope you enjoyed this brief introduction to the technology of the Intermezzo 4.1t loudspeaker system. If you would like to further explore the technology and design of the Intermezzo loudspeaker system, please ask your Infinity dealer for the C.M.M.D. and R.A.B.O.S. White Papers.The White Papers can also be downloaded from Infinity’s Web site at www.infinitysystems.com.
Unpacking the Product
Finish unpacking the speakers and check the contents. If you suspect damage from transit, report it immediately to your dealer and/or delivery service. Keep the shipping carton and packing materials for future use.
Included Accessories . . .
R.A.B.O.S. Kit (1) (Included with Left Subwoofer Only)
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-13
-15
-18
U-R
Batt
Power
Sound-Level Meter R.A.B.O.S.Test CD
Graph Templates |
Bandwidth Selector |
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Adjustment Key |
Grilles (2) |
Decorative |
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Side Panels |
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(2) |
AC Cord
2 INTERMEZZO 4.1t
PLACEMENT
FIGURE 1
FIGURE 2
LEFT SURROUND
FIGURE 3
LEFT
SIDE
LEFT
CHANNEL
FRONT
LEFT
FRONT
LEFT
REAR
LEFT
RIGHT
CHANNEL
SOFA
FRONT
RIGHT
TV |
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CENTER |
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RIGHT |
SOFA |
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SURROUND |
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FRONT
RIGHT
TV |
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CENTER |
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RIGHT |
SOFA |
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SIDE |
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REAR
RIGHT
INTERMEZZO 4.1t |
3 |
CONTROLS AND CONNECTIONS
Rear Panel
– + |
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LOWLOW-
INPUTS LEVEL LEVEL
INPUT OUTPUT
® |
3 |
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INTERMEZZO 4.1t |
BASS |
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2 |
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1 |
MODE |
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AC FUSE |
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6A 250V |
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HIGH-PASS |
ON |
OFF |
FILTER |
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POWER |
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CAUTION |
220-240V-50HZ 6A |
RISK OF ELECTRIC SHOCK |
DO NOT OPEN |
Speaker-Level Input
Low-Level-Input Connector
Low-Level-Output Connector
Bass-Mode Switch
High-Pass Filter Switch
AC-Cord Input
Power Switch
Front Panel
F
L
W
› 
Subwoofer-Level Control
R.A.B.O.S. Controls
Center-Frequency Adjustment
R.A.B.O.S. Level
Bandwidth Adjustment
4 INTERMEZZO 4.1t
The Infinity Intermezzo 4.1t offers 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.”
System Type |
Connection Methods |
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2-Channel receiver or integrated amplifier |
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that has no subwoofer output or |
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Pre-out/Main-In connectors |
1 |
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2-Channel receiver or integrated amplifier |
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with preamp output and input connectors |
2 |
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2-Channel system with separate preamplifier |
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and power amplifier |
2 |
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Dolby Pro Logic with THX, Dolby Digital, |
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or DTS® receiver with a filtered subwoofer |
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(or LFE) output connector |
3a |
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Dolby Digital or DTS processor with separate |
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power amplifiers or multichannel amplifier |
3b |
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Non-THX certified Dolby Pro Logic receiver |
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with full-range subwoofer outputs |
4 |
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Method 1
(ONE CHANNEL SHOWN)
AMPLIFIER/RECEIVER
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SPEAKER |
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– |
+ |
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OUTPUTS |
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+ |
– |
– |
+ |
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LOWLOW-
INPUTS LEVEL LEVEL
INPUT OUTPUT
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RED = + |
® |
3 |
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INTERMEZZO 4.1t |
BASS |
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2 |
MODE |
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1 |
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BLACK = – |
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AC FUSE |
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6A 250V |
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HIGH-PASS |
1. |
LOOSEN TERMINALS |
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ON |
OFF |
FILTER |
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2. |
INSERT BARE END; |
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TIGHTEN TERMINALS |
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3. |
SET BASS MODE |
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POWER |
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TO POSITION 3 |
NO STRIPE = – |
STRIPE = + |
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4. SET HIGH-PASS SWITCH |
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CAUTION |
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TO ON |
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RISK OF ELECTRIC SHOCK |
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220-240V-50HZ 6A |
DO NOT OPEN |
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AMPLIFIER/RECEIVER |
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SPEAKER OUTPUTS |
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Method 2 |
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SPEAKER |
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– |
+ |
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OUTPUTS |
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+ |
– |
– |
+ |
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LOW- |
LOW- |
LEFT |
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RIGHT |
INPUTS |
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LEVEL |
LEVEL |
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INPUT |
OUTPUT |
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® |
3 |
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(ONE CHANNEL SHOWN) |
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INTERMEZZO 4.1t |
BASS |
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2 |
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PREAMP OUTPUTS |
AMPLIFIER INPUTS |
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MODE |
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1 |
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L |
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L |
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R |
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AC FUSE |
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R |
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6A 250V |
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HIGH-PASS |
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ON |
OFF |
FILTER |
RED = + |
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POWER |
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CAUTION |
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BLACK = – |
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RISK OF ELECTRIC SHOCK |
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220-240V-50HZ 6A |
DO NOT OPEN |
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1. LOOSEN TERMINALS
2. INSERT BARE END; TIGHTEN TERMINALS
3. SET BASS MODE |
NO STRIPE = – |
STRIPE = + |
TO POSITION 2 |
4. SET HIGH-PASS SWITCH
TO OFF
INTERMEZZO 4.1t |
5 |
(ONE CHANNEL SHOWN)
Method 3a
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SURROUND RECEIVER |
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SUBWOOFER (LFE) |
FRONT SPEAKER |
– |
+ |
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OUTPUT |
OUTPUTS |
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– |
+ |
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LOW- |
LOW- |
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INPUTS |
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LEVEL |
LEVEL |
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TO SECOND 4 |
Y-Connector |
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INPUT |
OUTPUT |
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® |
3 |
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INTERMEZZO 4.1t |
BASS |
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2 |
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MODE |
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1 |
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RED = +
AC FUSE
6A 250V |
HIGH-PASS |
ON OFF |
FILTER |
BLACK =
1. LOOSEN TERMINALS
2. INSERT BARE END; TIGHTEN TERMINALS
3. SET BASS MODE |
NO STRIPE = – |
STRIPE = + |
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TO POSITION 1 |
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POWER |
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CAUTION |
220-240V-50HZ 6A |
RISK OF ELECTRIC SHOCK |
DO NOT OPEN |
4.SET HIGH-PASS SWITCH
TO OFF
Method 3b
RED = +
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(ONE CHANNEL SHOWN) |
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AMPLIFIER |
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PROCESSOR |
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SPEAKER |
INPUT |
FRONT CHANNEL |
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OUTPUT |
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OUTPUT |
L |
SUBWOOFER (LFE) |
L |
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– |
+ |
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OUTPUT |
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R |
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R |
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Y-Connector
TO SECOND 4.1t
– +
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INPUTS |
LOW- |
LOW- |
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BLACK = – |
LEVEL |
LEVEL |
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INPUT |
OUTPUT |
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® |
3 |
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INTERMEZZO 4.1t |
BASS |
|
1. |
LOOSEN TERMINALS |
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2 |
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MODE |
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1 |
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2. |
INSERT BARE END; |
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TIGHTEN TERMINALS |
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AC FUSE |
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6A 250V |
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HIGH-PASS |
3. SET BASS MODE |
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ON |
OFF |
FILTER |
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NO STRIPE = – |
STRIPE = + |
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TO POSITION 1 |
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4. SET HIGH-PASS SWITCH
TO OFF
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POWER |
|
CAUTION |
220-240V-50HZ 6A |
RISK OF ELECTRIC SHOCK |
DO NOT OPEN |
6 INTERMEZZO 4.1t
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