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DO NOT REMOVE THE SPECIAL ACOUSTIC FOAM ATTACHED TO THE FRONT
BAFFLE AND/OR GRILLE OF YOUR SPEAKERS.
This foam is a critical part of your loudspeaker system and plays an important role
in its high level of performance. It focuses the radiation of the tweeters, minimizes
cabinet diffraction, and provides the flattest possible frequency response.
operation manual
S-250
S-150THX
S-150THX C
S-150THX AC
Manufactured under license from
Lucasfilm Ltd. U.S. Patent Nos.
5,043,970; 5,189,703, and
5,222,05
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MAIN SATELLITE SPEAKER TABLE OF CONTENTS 1. INTRODUCTION................................................................................................3 2. THE HOME THX AUDIO SPEAKER SYSTEM..............................................................3 3. PLACEMENT OF YOUR M&K SPEAKERS.................................................................3 4. SPEAKER HOOK-UP.................................................................................................4 5. OPTIMIZING SPEAKER PLACEME
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MAIN SATELLITE SPEAKER 1. INTRODUCTION Congratulations! Your new M&K THX speaker system will give you years of unmatched enjoyment and excitement while listening to your favorite musical and audio/video sources. We encourage you to read this owner’s manual, as there is a great deal of information provided here to help you get the best possible performance. If you have any questions about your speaker system, please contact your M&K dealer or call the M&K factory direct- ly at (818) 701-7010,
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MAIN SATELLITE SPEAKER The S-150 and S-250 speakers are magnetically shielded. This means that they can be placed close to a television monitor without distorting the picture. If you place the speaker directly on top of a large screen direct-view monitor, there is some slight possibility of picture distortion. If that occurs, you may need to move the speaker a few inches or to sep- arate the speaker from the television by a similar distance. Call the factory if you have problems. For more detail
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MAIN SATELLITE SPEAKER A. HEIGHT (OR ANGLE) The S-250, and S-150 have a controlled vertical radiation pattern that makes the speaker’s location critical. It is very important to aim the tweeters at the main listening position in order to achieve their very best sound quality and their flat- test frequency response. Ideally, your speakers' tweeters should be at the same height from the floor as your ears when you are sitting in your main listening position. Specifically, this means the distance f
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MAIN SATELLITE SPEAKER FIGURE 2 X A Y SEPARATION BETWEEN LEFT AND RIGHT SPEAKERS Aim the speakers at the primary listener. Line X - Y should equal line A - B. (Line A - B appears longer in this diagram due to an optical illusion). B cially in the phantom center. You may also want to angle (or "toe-in") the speakers slightly. This often improves the sharp- ness of the stereo image, and provides a wider seating area. The S-150 Left and Right speakers provide a default toe- in through the angle of
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MAIN SATELLITE SPEAKER ets, or speaker hangers to make this easy to accomplish. FIGURE 4 Remember that they are designed to be installed verti- cally, with the tweeters aimed at the listeners' ears. They can, however, be placed at virtually any height. This includes sitting directly on the floor, tilted up, as well as being mounted at ceiling height and tilted down. For certain installations, where the speaker is located above the listener’s ear level, the use of the S-150AC is a good alternativ
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MAIN SATELLITE SPEAKER 8. SATELLITE/SUBWOOFER PHASING TEST In any system using a subwoofer separate from Satellite speakers, a phasing test must be performed to insure good bass blending. This test insures optimum sound in the critical bass frequencies where your Subwoofer and Satellite speakers overlap. HOME THX AUDIO SYSTEM For a Home THX Audio system, follow the system instructions provided with the THX controller, as you will need to have correct phase among all the speakers in the system
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MAIN SATELLITE SPEAKER When tone controls or equalizers are used to boost frequencies, the problem occurs much more rapidly. Even a small boost of low or high frequencies can easily double the power requirement and lead to amplifier clipping at moder- ate levels. Therefore, you should use your tone controls judiciously, avoiding extreme boosts of the bass and treble con- trols, especially when you are listening at high volume levels. The best way to avoid speaker damage is to use common sense. U
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MAIN SATELLITE SPEAKER 12. CABINET MAINTENANCE The S-150's and S-250’s painted black finish does not require any special maintenance; regular dusting with a lint- free cloth and periodic cleaning is all that is required. Matching black paint can be used if necessary to repair any sur- face damage. 13. SPECIFICATIONS S-250 IMPEDANCE: 4 ohms MINIMUM POWER: 25 watts RMS RECOMMENDED POWER: amplifiers with between 50 and 400 watts RMS or more (see below) MAXIMUM POWER: 400 watts RMS unclipped p
