Infinity Intermezzo 1.2-S Owners manual
Owner’s Guide
INTERMEZZO™1.2s
ii
INTERMEZZO 1.2s
iii
INTERMEZZO 1.2s
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.
IMPORTANT
SAFETY PRECAUTIONS
iii Important Safety Precautions
1 Technology
1 Ceramic Metal Matrix Diaphragms
™
(C.M.M.D.)
1 Room-Friendly Acoustical Design
2 Unpacking the Product/Included Accessories
3 Placement
4 Controls and Connections
5 Connection Methods 1–4
8 Operation
9 Room Adaptive Bass Optimization System
™
(R.A.B.O.S.)
10 Contents of the R.A.B.O.S.Test CD
10 R.A.B.O.S.Sound-Level Meter (RSLM)
15 What You Measure,What To Do
18 Adjusting the R.A.B.O.S.Equalizer
19 Final System Balance
20 Maintenance and Service
21 Specifications
22 R.A.B.O.S. Measurement Templates
Table of Contents
INTERMEZZO 1.2S OWNER’S GUIDE
iv
INTERMEZZO 1.2s
1
INTERMEZZO 1.2s
Intermezzo Series loudspeakers incorporate several innovative
technologies that, when implemented by exceptional engineering
talent after hours upon hours of subjective listening evaluations,
result in a loudspeaker that realistically and accurately reproduces the signal source with minimal distortion and coloration.
Ceramic Metal Matrix Diaphragms™(C.M.M.D.)
For decades, loudspeaker engineers have known that the ideal
transducer should be stiff,yet light, and have high internal damping (damping is a material’s ability to absorb energy). Infinity’s
C.M.M.D.transducer is a significant advance in transducer technology.Ceramic,a class of material new to loudspeakers,
offers better performance than that of other materials. Ceramic is
stiffer than metals and lighter than plastics and typical composite
materials; it also offers improved damping.These ceramic-based
transducers take us a giant step closer to the ever-elusive “ideal
transducer.”
In tweeters,C.M.M.D.technology offers stiffness and damping
superior to that of traditional metals and soft-dome materials.
In woofer and midrange applications,it offers accurate pistonic
operation over the entire frequency range of the driver, completely eliminating coloration due to cone breakup and dramatically
reducing distortion.And when ceramic-metal-matrix transducers
are exposed to moisture,sunlight or extreme temperatures, their
performance does not deteriorate.
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.
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, switchmode power supply that provides the main voltage rails for a linear Class-AB 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.
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 Series loudspeakers will sound exceptional in even the most unexceptional listening environment,
Infinity has developed the proprietary Room Adaptive Bass
Optimization System™ (R.A.B.O.S..™).
With a single band of parametric equalization,the Intermezzo 1.2s
can be adjusted to tame any problematic room bass resonances
below 80Hz.
We hope you enjoyed this brief introduction to the technology
of Intermezzo loudspeakers.If you would like to further explore
their technology and design, 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.
TECHNOLOGY
Power
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U-R
Batt
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 . . .
Grille Decorative
Side Panel
AC Cord
R.A.B.O.S. Kit (1)
Sound-Level Meter R.A.B.O.S.Test CD
Graph Templates Bandwidth Selector
Adjustment Key
2
INTERMEZZO 1.2s
3
INTERMEZZO 1.2s
Since the installation of a subwoofer can be somewhat more
complicated than installing full-range speakers,it is essential
that you read this section very carefully prior to connecting the
subwoofer to your system. Should you have questions relating to
your installation, it is advisable to call your dealer for advice.
The performance of the subwoofer is directly related to its
placement in the listening room and how you align the subwoofer
with its satellite speakers.Setting the volume of the subwoofer in
relationship to the left and right speakers is also of critical
importance because it is essential that the subwoofer integrates
smoothly with the entire system. Setting the subwoofer’s volume
level too high will result in an overpowering,boomy bass. Setting
the volume level too low will negate the effect of the subwoofer.
Generally speaking, the closer the subwoofer is placed to a room
boundary (walls and corners), the more bass output there will be.
If you are hearing too much low-frequency sound in relation to the
rest of the program material, move the subwoofer further from the
corner or wall. Conversely, if, after making all adjustments, there
is still not enough low-frequency energy, move the subwoofer
closer to a wall or corner.
Here are several additional facts on installation that may prove
useful. It is generally believed by most audio authorities that low
frequencies (below 125 Hz) are nondirectional and, therefore,
placement of a subwoofer within any listening room is not critical.
While in theory it is true that the larger wavelengths of extremely
low frequencies are basically nondirectional, the fact is that when
installing a subwoofer within the limited confines of a room,
reflections,standing waves and absorptions generated within the
room will strongly influence the performance of any subwoofer. As
a result, specific location of the subwoofer becomes important, and
we strongly recommend that you experiment with placement before
choosing a final location.
Placement will depend upon your room and the amount and quality
of bass required (for example, whether or not your room permits
placement of the subwoofer near either satellite).
PLACEMENT
➢
➢
SOFA
FRONT
LEFT
LEFT
SURROUND
FRONT
RIGHT
RIGHT
SURROUND
TV
CENTER
SUB
➢
➢
SOFA
LEFT
CHANNEL
RIGHT
CHANNEL
SUB
FIGURE 1
F
IGURE 2
AC-Cord Input
Power Switch
Speaker-Level Inputs
Speaker-Level Outputs
High-Level High-Pass Filter Switch
Low-Level-Input Connectors
Low-Level-Output Connectors
Phase Switch
Low-Pass Filter Switch
Variable Low-Pass Filter Adjustment
Subwoofer-Level Control
R.A.B.O.S. Controls
Center-Frequency Adjustment
R.A.B.O.S.Level
Bandwidth Adjustment
C
ONTROLS AND CONNECTIONS
Rear Panel
Front Panel
4
INTERMEZZO 1.2s
230V – 60HZ 6A
F
POWER
AC FUSE
6A 250V
L
L
–
INPUTS OUTPUTS
R
–
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
W
›
–
–
L
R
++
ON
HIGH-LEVEL
++
HIGH-PASS
FILTER
OFF
LOWLEVEL
INPUT
INTERMEZZO 1.2s
L
R
OUTPUT
LOW-
LEVEL
0
PHASE
180
OFF
ON
LOW-PASS
FILTER
80
50 130
LOW-PASS
FILTER
The Infinity Intermezzo 1.2s 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 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.”
–
++
–
+
–
OUTPUTS
POWER
0
LOW-PASS
FILTER
LOW-PASS
FILTER
LOWLEVEL
INPUT
LOWLEVEL
OUTPUT
HIGH-LEVEL
HIGH-PASS
FILTER
PHASE
AC FUSE
6A 250V
180
80
50 130
ON
OFF
ON
OFF
INTERMEZZO 1.2s
L
R
L
R
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
LOOSEN TERMINALS
INSERT BARE END;
TIGHTEN TERMINALS
SET LOW-PASS
FILTER TO “ON”
SET HIGH-PASS SWITCH
TO “ON” OR “OFF” (SEE P. 8)
1.
2.
3.
4.
BLACK =
–
NO STRIPE = –STRIPE =
+
RED =
+
INPUTS
L
R
230V – 60HZ 6A
–
+
AMPLIFIER/RECEIVER
SPEAKER
OUTPUTS
LEFT RIGHT
(ONE CHANNEL SHOWN)
––
++
RIGHT
SPEAKER
–
+
Method 1
5
INTERMEZZO 1.2s
System Type Connection Methods
2-Channel receiver or integrated amplifier
that has no subwoofer output or
Pre-out/Main-In connectors 1
2-Channel receiver or integrated amplifier
with preamp output and input connectors 2
2-Channel system with separate preamplifier
and power amplifier 2
Dolby Pro Logic with THX, Dolby Digital,
or DTS
®
receiver with a filtered subwoofer
(or LFE) output connector 3a
Dolby Digital or DTS processor with separate
power amplifiers or multichannel amplifier 3b
Non-THX certified Dolby Pro Logic receiver
with full-range subwoofer outputs 4
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