Infinity Portable Speaker MTS Center User Manual

PRELUDE MTS CENTER  
Owner’s Guide  
 
W
IRING THE YSTEM  
S
After placing the speaker, you are ready to connect it to your system.  
First, turn off all audio-system power. Use high-quality speaker wire  
to make the connections. Consult the owners manuals, included with  
your amplifier or receiver, for connection and operation procedures.  
Tilting the Speaker...  
If needed, the enclosed stand allows you to tilt the speaker across a  
25-degree range (i.e., 18° maximum up and 7° maximum down), as  
shown in Figure 3.  
Surround Modes...  
Important!  
When using the Prelude MTS Center in a Dolby* Digital or DTS®  
home-theater system, make sure the receivers/processors center-  
channel speaker modes are set to“Small. When using the Prelude  
MTS Center in a Dolby Pro Logic* home-theater system, make sure  
the receivers/ processors center-channel mode is set toNormal.  
Do not exceed the tilt range. Doing so may cause the speaker to fall  
out of its stand.  
TILT DOWN  
(WHEN ON TOP OF  
A LARGER TV)  
NO TILT  
TILT UP  
(WHEN BELOW TV)  
Wiring and Polarity...  
The Prelude MTS Center speaker has gold-plated terminals that  
can accept either bare wire or banana connectors.To ensure proper  
polarity, connect each + terminal on the back of the amplifier or  
receiver to the respective + (red) terminal on each speaker, as shown  
in Figure 4. Connect the (black) terminals in a similar way. See the  
owners manuals that were included with your amplifier or receiver to  
confirm connection procedures.  
DO NOT EXCEED MAXIMUM  
DOWN-TILT (WHEN BOTTOM  
OF GRILLE TOUCHES BUMPER)  
DO NOT EXCEED MAXIMUM  
UP-TILT (WHEN TOP OF  
GRILLE IS LEVEL)  
Important!  
Do not reverse polarities (i.e., + to , or to +) when making  
connections. Doing so will degrade the imaging and bass response of  
the home-theater system.  
FIGURE 3 The Prelude MTS center channel can be tilted up or  
down in its stand.  
After correctly placing and wiring the Prelude MTS Center and the  
rest of your speaker system, adjust the levels for all of the channels  
as recommended by the manufacturer of your receiver/processor.  
+
+
This example shows how to connect bare wires to the  
FIGURE 4  
terminals. Banana plugs may also be inserted directly into the rear of  
the connector.  
¡
Loosen the terminals.  
Insert bare ends; tighten terminals.  
 
SPECIFICATIONS  
Performance Data...  
Frequency Response:  
80 ~ 22,000Hz (±3dB)  
100 ~ 20,000Hz (±1.5dB)  
Impedance:  
4 ohms (±1 ohm)  
89dB  
Sensitivity:  
(2.83V @ 1m)  
Recommended Amplifier 25 – 500 watts  
Power Range:  
2nd- and 3rd-Order  
Harmonic Distortion:  
<1%  
(20Hz – 20kHz @ 95dB SPL)  
Drive Units...  
Low Frequency:  
Mid Frequency:  
High Frequency:  
2 x 5-1/4" (133mm) C.M.M.D.™  
drivers, magnetically shielded,  
neodymium magnet  
3-1/2" (89mm) C.M.M.D. drivers,  
magnetically shielded,  
neodymium magnet  
1" (25mm) C.M.M.D. drivers,  
elliptical waveguide,  
magnetically shielded,  
neodymium magnet  
Crossover Frequencies: 300Hz, 2000Hz – 24dB/octave  
Dimensions...  
Width:  
Height:  
Depth:  
Weight:  
23" (584mm)  
6-1/2" (165mm)  
7-5/8" (194mm)  
21-1/4 lb (9.65 kg)  
Declaration of Conformity  
We, Infinity Systems A/S  
Kongevejen 194B  
DK-3460 Birkerød  
DENMARK  
* Trademarks of Dolby Laboratories.  
DTS is a registered trademark of  
Digital Theater Systems, Inc.  
declare in own responsibility, that the product described  
in this owner’s manual is in compliance with technical  
standards:  
Infinity is a registered trademark of  
Infinity Systems, Inc.  
EN 50081-1:1992  
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.  
EN 50082-1:1992  
Steen Michaelsen  
Infinity Systems A/S  
Birkerød. DENMARK. 9/99  
A Harman International Company  
© 1999 Infinity Systems, Inc., 250 Crossways Park Drive,Woodbury, NY 11797 USA (800) 553-3332 (USA only) www.infinitysystems.com Printed in USA 9/99 Part No. 335060-003  
 

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