Infinity Portable Speaker 35c User Manual

INTERMEZZO 3.5C  
Owner’s Guide  
 
IMPORTANT SAFETY PRECAUTIONS  
11. Power Sources. This product should be operated  
18. Overloading. Do not overload wall outlets, extension  
cords, or integral convenience receptacles, as this can  
result in a risk of fire or electric shock.  
19. 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.  
20. Servicing. Do not attempt to service this product  
yourself, as opening or removing covers may expose  
you to dangerous voltage or other hazards. Refer all  
servicing to qualified service personnel.  
21. Damage Requiring Service. Unplug this product  
from the wall outlet and refer servicing to qualified  
service personnel under the following conditions:  
a. The power-supply cord or the plug has been  
damaged; or  
Read First!  
only from the type of 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. For products intended to operate  
from battery power, or other sources, refer to the  
operating instructions.  
12. Grounding or Polarization. This product may be  
equipped with a polarized alternating-current-line plug  
(a plug having one blade wider than the other).This  
plug will fit into the power outlet only one way.This is  
a safety feature. If you are unable to insert the plug  
fully into the outlet, try reversing the plug. If the plug  
should still fail to fit, contact your electrician to  
replace your obsolete outlet. Do not defeat the safety  
purpose of the polarized plug.  
13. 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.  
14. Nonuse Periods. The power cord of the product  
should be unplugged from the outlet when left unused  
for long periods of time.  
15. Outdoor Antenna Grounding. If an outside antenna  
or cable system is connected to the product, be sure  
the antenna or cable system is grounded so as to  
provide some protection against voltage surges and  
built-up static charges.Article 810 of the National  
Electrical Code,ANSI/NFPA 70, provides information  
with regard to proper grounding of the mast and  
supporting structure, grounding of the lead-in wire to  
an antenna discharge unit, size of grounding  
conductors, location of antenna-discharge unit,  
connection to grounding electrodes, and requirements  
for the grounding electrode. See Figure A.  
16. Lightning. For added protection for this product  
during a lightning storm, or when it is left unattended  
and unused for long periods of time, unplug it from  
the wall outlet and disconnect the antenna or cable  
system.This will prevent damage to the product due to  
lightning and power-line surges.  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
The lightning flash with arrowhead  
symbol within an equilateral triangle is  
intended to alert the user to the presence  
of uninsulated “dangerous voltage” within  
the product’s enclosure that may be of  
sufficient magnitude to constitute a risk of  
electric shock to persons.  
The exclamation point within an  
equilateral triangle is intended to alert the  
user to the presence of important  
operating and maintenance (servicing)  
instructions in the literature accompanying  
the appliance.  
b. Objects have fallen onto, or liquid has been spilled  
into, the product; or  
c. The product has been exposed to rain or water; or  
d. The product does not operate normally when  
following the operating instructions.Adjust only those  
controls that are covered by the operating instructions,  
as an improper adjustment of other controls may  
result in damage and will often require extensive work  
by a qualified technician to restore the product to its  
normal operation; or  
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.Attachments. Do not use attachments not  
recommended by the product manufacturer,  
as they may cause hazards.  
7.Water and Moisture. To reduce the risk of fire or  
electric shock, do not use this product outdoors or  
near waterfor example, near a bathtub, wash bowl,  
kitchen sink or laundry tub; in a wet basement; near a  
swimming pool; or the like.  
8.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  
manufacturers instructions, and should use a  
mounting accessory recommended by the  
manufacturer.  
e. The product has been dropped or damaged in any  
way; or  
f. The product exhibits a distinct change in  
performance; this indicates a need for service.  
22. Replacement Parts. When replacement parts are  
required, be sure the service technician has used  
replacement parts specified by the manufacturer or  
that have the same characteristics as the original  
part. Unauthorized substitutions may result in fire,  
electric shock or other hazards.  
23. Safety Check. Upon completion of any service or  
repairs to this product, ask the service technician to  
perform safety checks to determine that the product is  
in proper operating condition.  
24.Wall or Ceiling Mounting. The product should be  
mounted to a wall or ceiling only as recommended by  
the manufacturer.  
25. Heat. The product should be situated away from  
heat sources such as radiators, heat registers, stoves  
or other products (including amplifiers) that produce  
heat.  
17. Power Lines. An outside antenna system should not  
be located in the vicinity of overhead power lines or  
other electric light or power circuits, or where it can  
fall into such power lines or circuits.When installing  
an outside antenna system, extreme care should be  
taken to keep from touching such power lines or  
circuits, as contact with them might be fatal.  
9.A Product and Cart Combination  
Should Be Moved with Care. Quick  
stops, excessive force and uneven  
surfaces may cause the product and  
cart combination to overturn.  
Figure A.  
Example of Antenna Grounding as per  
National ElectricalCode ANSI/NFPA 70  
Antenna Lead-In Wire  
10.Ventilation. Slots and openings in the cabinet are  
provided for ventilation and to ensure reliable  
operation of the product and to protect it from  
overheating, and these openings must not be blocked  
or covered.The openings should never be blocked by  
placing the product on a bed, sofa, rug or other  
similar surface.This product should not be placed in a  
built-in installation, such as a bookcase or rack,  
unless proper ventilation is provided or the  
manufacturers instructions have been adhered to.  
Ground Clamp  
Antenna Discharge Unit (NEC Section 810-20)  
Grounding Conductors (NEC Section 810-21)  
Electric Service Equipment  
Ground Clamps  
Power Service Grounding Electrode System  
(NEC Art. 250, Part H)  
iii  
INTERMEZZO 3.5c  
 
INTERMEZZO 3.5C OWNERS GUIDE  
Table of Contents  
ii  
iii  
1
Caution  
Important Safety Precautions  
Technology  
2
Unpacking the Product/Included Accessories  
Placement  
2
3
Tilt Adjustment  
4
Controls and Connections  
Maintenance and Service  
Specifications  
6
7
iv  
INTERMEZZO 3.5c  
 
TECHNOLOGY  
Amplifier  
®
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.  
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 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.  
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 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-elusiveideal transducer.”  
The result is an extremely efficient audio amplifier that does not  
compromise audio performance.  
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.White Paper.The White Paper can also be  
downloaded from Infinity’s Web site at www.infinitysystems.com.  
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  
diaphragms 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.  
1
INTERMEZZO 3.5c  
 
PLACEMENT  
The Infinity Intermezzo 3.5c is designed to offer excellent  
performance in any home-theater system. However, the following  
placement guidelines and suggestions will start you on your way  
to achieving optimum performance. Remember, these are  
guidelines.  
Unpacking the Product  
Finish unpacking the speaker 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.  
For best results, place the Intermezzo 3.5c center-channel  
speaker either on top of or below the television. Also, position  
the speaker so the front grille is even with the TV screen, as  
shown in Figure 1.  
Included Accessories ...  
FRONT  
LEFT  
FRONT  
RIGHT  
Grille  
TV  
CENTER  
®
Decorative  
Side Panel  
LEFT  
SURROUND  
SOFA  
RIGHT  
SURROUND  
AC Cord  
FIGURE 1  
Tilt Adjustment Hardware  
TV  
FIGURE 2 This example shows the Intermezzo 3.5c center-  
channel speaker being placed on top of a television.The speaker can  
also be placed below the television.  
2
INTERMEZZO 3.5c  
 
TILT ADJUSTMENT  
For optimum performance, the center-channel speaker should be  
directed toward the listening area. Since many televisions are  
installed so that the center-channel speaker is well above ear  
level, the Intermezzo 3.5c can be tilted downward so its aimed at  
the listening area.  
If you need to tilt the Intermezzo 3.5c, refer to Figure 3 as you  
perform the following steps:  
1. Open the accessory pack and locate the following items:  
three feet (of different lengths), three locking nuts and one  
wrench.  
2. Lay the speaker upside down and locate the threaded hole on  
the bottom.  
3. Screw in the appropriate foot for the desired amount of tilt.  
4. Tighten the nut with the enclosed wrench.  
5. Carefully flip the speaker upright.  
FIGURE 3  
This cross section shows where to install a  
foot on the bottom of the Intermezzo 3.5c center-channel  
speaker.  
3
INTERMEZZO 3.5c  
 
CONTROLS AND CONNECTIONS  
Rear Panel  
ON OFF  
ON OFF  
INTERMEZZO 3.5c  
120V – 60HZ 6A  
TV  
AC FUSE  
3A 250V  
CAUTION!  
For continued protection  
against risk of fire, replace  
only with same type fuse  
and rating  
NONE SMALL LARGE  
HIGH-PASS  
FILTER  
LED  
CAUTION  
ATTENTION!  
Utilizer un fusible de  
recharge de meme  
type et calibre  
ANSIUL-1492  
LR106476  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
INPUTS  
+
AVIS RISQUE CHOC ELECTRIQUE – NE PAS OUVRIR  
POWER  
AC-Cord Input  
Power Switch  
Speaker Input  
TV Size Selector  
High-Pass-Filter Selector  
LED Selector  
Front Panel  
Woofer Level Control  
4
INTERMEZZO 3.5c  
 
Speaker Connections  
RED =  
+
BLACK =  
Amplifier/Receiver  
Center-Channel  
Speaker Outputs  
+
STRIPE =  
+
NO STRIPE =  
1. LOOSEN TERMINALS  
2. INSERT BARE END;  
TIGHTEN TERMINALS  
ON OFF  
ON OFF  
LED  
INTERMEZZO 3.5c  
120V – 60HZ 6A  
TV  
AC FUSE  
3A 250V  
CAUTION!  
For continued protection  
against risk of fire, replace  
only with same type fuse  
and rating  
NONE SMALL LARGE  
HIGH-PASS  
FILTER  
CAUTION  
ATTENTION!  
Utilizer un fusible de  
recharge de meme  
type et calibre  
ANSIUL-1492  
LR106476  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
INPUTS  
+
AVIS RISQUE CHOC ELECTRIQUE – NE PAS OUVRIR  
POWER  
AC CORD  
TV Size Selector  
LED Selector  
This control optimizes the performance of the Intermezzo 3.5c  
based on the size of the TV on which it is placed.  
This switch determines whether the green power indicator on  
the woofer level control will illuminate when the speaker is  
playing.The setting of this switch does not affect the  
performance of the speaker in any way.  
If you are placing the Intermezzo 3.5c behind a perforated  
screen for a projection TV, set this switch to“None.”  
Setting the Woofer Level Control ᕧ  
1. Set the processors/receivers center-channel-speaker setting  
to“Small.  
If you are placing the Intermezzo 3.5c on top of a TV with a  
diagonal screen size up to about 36", set this switch to“Small.”  
2. Confirm correct setting of Set TV Size selector  
.
If you are placing the Intermezzo 3.5c on top of a TV with a  
diagonal screen size larger than 36", set this switch to“Large.”  
3. Using the test tones in your receiver/processor, adjust the  
center-channel-speaker output (on the processor) to match the  
left and right speakers.  
High-Pass Filter  
When set to“On,this control limits the low frequencies that the  
Intermezzo 3.5c will reproduce and allows you to use your  
processors/receivers bass-management settings for an ideal  
blend with a subwoofer.  
4. Finally, fine-tune the level adjustment on the Intermezzo 3.5c  
to most closely match the tonal balance of the main left and  
right speakers. (For the Intermezzo 4.1t, initially set the center-  
channel level to“5. For the Intermezzo 2.6, set to the same  
setting as the Intermezzo 2.6s woofer adjustment.)  
When set to“Off,the Intermezzo 3.5c will reproduce the entire  
frequency range. Use this setting only if your system does not  
include a subwoofer.  
5
INTERMEZZO 3.5c  
 
MAINTENANCE AND SERVICE  
The Intermezzo 3.5c may be cleaned using a soft cloth,  
dampened with water only, to remove fingerprints or to wipe  
off dust.  
The grille may be gently vacuumed. Stains may be removed with  
an aerosol cleaner, following its instructions. Do not use any  
solvents on the grille.  
All wiring connections should be inspected and cleaned or  
remade periodically.The frequency of maintenance depends on  
the metals involved in the connections, atmospheric conditions,  
and other factors, but once per year is the minimum.  
If a problem occurs, make sure that all connections are properly  
made and clean. In the event that your Intermezzo 3.5c ever  
needs service, contact your local Infinity dealer or Infinity  
directly at 1-800-553-3332 or www.infinitysystems.com.  
6
INTERMEZZO 3.5c  
 
SPECIFICATIONS  
Intermezzo 3.5c  
Frequency Response:  
80Hz – 20kHz (±1.5dB)  
60Hz – 22kHz (±3dB)  
Nominal Impedance:  
8  
Sensitivity:  
90dB  
(2.83V @ 1 meter)  
Recommended  
Amplifier Power Range:  
25 – 150 Watts  
250 Watts RMS  
Woofer Amplifier Output:  
(100Hz with no more  
than 0.1% THD)  
2nd- and 3rd-Order  
Harmonic Distortion:  
(20Hz – 20kHz @ 95dB SPL)  
<1%  
Crossover Frequencies:  
Dimensions:  
350Hz, 2800Hz; 24dB/Octave  
8-3/4" x 22" x 8"  
222mm x 559mm x 203mm  
Weight:  
27 lb  
12.3kg  
Infinity continually strives to update and improve existing products, as well  
as create new ones.The specifications and construction details in this and  
related Infinity publications are therefore subject to change without notice.  
7
INTERMEZZO 3.5c  
 
© 2000 Infinity Systems, Inc., 250 Crossways Park Drive,Woodbury, NY 11797 USA (800) 553-3332 (USA Only) www.infinitysystems.com  
BASH is a registered trademark of Indigo Corporation. Infinity is a registered trademark of Infinity Systems, Inc. Printed in USA 3/00 Part No. 335717-001  
 

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