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MK Sound MX-350THX Operation Manual

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operation
manual
MX-5000
MX-350
THX
Miller & Kreisel Sound Corporation
10391 Jefferson Boulevard
Culver City, CA 90232 USA
(310) 204-2854
FAX (310) 202-8782
© 1997 MILLER & KREISEL SOUND CORP.
Manufactured under license from Lucasfilm Ltd.
Lucasfilm and THX are registered trademarks of
Lucasfilm Ltd.
Mk II
THX

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  • Page 1 operation manual MX-5000 Mk II MX-350 Miller & Kreisel Sound Corporation 10391 Jefferson Boulevard Culver City, CA 90232 USA (310) 204-2854 FAX (310) 202-8782 © 1997 MILLER & KREISEL SOUND CORP. Manufactured under license from Lucasfilm Ltd. Lucasfilm and THX are registered trademarks of Lucasfilm Ltd.

  • Page 2: Table Of Contents

    THX subwoofers SAFETY INSTRUCTIONS ... 3 INTRODUCTION ... 4 WHERE TO PLACE YOUR SUBWOOFER ... 4 OPERATION WITH THX COMPONENTS... 4 CONNECTING THE SUBWOOFER TO A THX CONTROLLER TESTING THE SUBWOOFER (THX) ... CALIBRATING THE SUBWOOFER (THX) ... 6 OPERATION OF THE "LOW PASS FILTER" AND "BASS LEVEL" SWITCHES ... OPERATION OF THE "BASS EQ"...

  • Page 3: Safety Instructions

    SERVICING - Do not attempt to service this product yourself. Opening or removing covers, including any over bottom or side speaker drivers, may expose you to dangerous voltage or other hazards. Refer all service to qualified service personnel. DAMAGE REQUIRING SERVICE - Unplug this product from the wall outlet and refer servicing to qualified personnel under the following conditions: When the power-supply cord or plug is damaged.

  • Page 4: Introduction

    THX subwoofers Congratulations! Your new M&K THX performance. The new dimension of deep and powerful bass it provides will both thrill and excite you. We strongly 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.
  • Page 5 THX subwoofers To connect the subwoofer, run a shielded RCA - RCA interconnect cable from the SUBWOOFER OUTPUT jack on your THX controller to the "LEFT/MONO" "INPUT" jack on the subwoofer's backplate. See Figure 1 below. Some THX controllers have a pair of stereo subwoofer outputs, while others have a single mono output.

  • Page 6: Testing The Subwoofer (Thx)

    You should hear the subwoofer operate. If you think the subwoofer isn't working, walk up to the speaker and listen to it from a distance of a foot or less. If you confirm that it is not working, unplug the subwoofer and check all of your connections before trying again.

  • Page 7: Setting Subwoofer Level (Thx)

    THX subwoofers and it gives you maximum output level, dynamic range, and headroom. In your listening room, the "ANECHOIC" position will actually produce a rising output below about 30 Hz. Its response is not as flat (accurate) as the "THX" position and it limits the subwoofer's maximum output and dynamic range. For performance to THX specifications, this switch must be set to the "THX"...

  • Page 8: Operation Of The "Bass Eq" Switch

    THX subwoofers knob sets the upper rolloff point of the Subwoofer, eliminating mid-bass and midrange that are being reproduced by your Satellite speakers. The control is a means of fine-tuning the transition between your Subwoofer and Satellite speakers, and it provides a rolloff of 12 dB/octave up to 125 Hz, where the filter shifts to 36 dB/octave.
  • Page 9 THX subwoofers FIGURE 3 - WIRING ONE SUBWOOFER TO AN AMP OR PROCESSOR WITH A SUBWOOFER OUTPUT JACK (NON-THX) FIGURE 4 -WIRING TWO SUBWOOFERS TO AN AMP OR PROCESSOR WITH A SUBWOOFER OUTPUT JACK (NON-THX) If your surround processor has only one PREAMP OUTPUT (and no SUBWOOFER OUT), and you do not have an M&K High-Pass Filter or crossover, you must use a Y-connector to feed the amplifier and subwoofer.

  • Page 10: Using The Subwoofer With The M&K Hp-80 Or Vf-80 High-Pass Filters

    THX subwoofers FIGURE 5 - WIRING ONE SUBWOOFER TO AN AMP OR PREAMP WITH ONE SET OF PREAMP OUTPUTS FIGURE 6 - WIRING TWO SUBWOOFERS TO AN AMP OR PREAMP WITH ONE SET OF PREAMP OUTPUTS WIRING WITH THE M&K HP-80 OR VF-80 HIGH-PASS FILTERS (NON-THX The M&K HP-80 and VF-80 High-Pass Filters can improve the sound of systems by filtering the bass fed to the main amp and Satellite speakers.

  • Page 11: Testing The Subwoofer (Non-Thx)

    THX subwoofers to feed these filters. To connect one of these filters, run one set of shielded RCA - RCA interconnect cables from the receiver, amp or preamp's MAIN OUTPUT to the input jacks on the HP-80 or VF-80. Run another set of interconnects from the high frequency output jacks on the filter to receiver or amp's POWER AMP inputs.

  • Page 12: Satellite/Subwoofer Phasing Test

    Your THX 5.1 channel processor or receiver has a feature that allows you to electronically "move" the position of the main speakers so that the signal from each speaker arrives at your ear at the same time. It does this by time delaying the signal that is fed to the speakers that are closer to your ears.

  • Page 13: Fine-Tuning The Placement Of Your Subwoofer

    THX subwoofers output. When this happens, the midbass is cancelled. Re-do this test any time you move any of your speakers or the listening position. If you want to experiment, move the main speakers or subwoofer towards or away from your listening position, in small increments.

  • Page 14: Use Of Spiked Feet

    THX subwoofers Buzzes and rattles can be cured or improved by applying glue, tape, or pads in the area where the objects are vibrating against each other. Try felt pads between objects that cannot be taped or glued together (such as picture frames buzzing against walls). One subwoofer is sufficient in a stereo system because the human ear-brain hearing system cannot ocate the direction of bass sounds below 150 Hz.

  • Page 15: If You Need To Replace The External Fuse

    Because the subwoofer easily reproduces 60 Hz signals (the frequency of hum), it is often blamed for causing hum that originates elsewhere in the system. Always avoid running all speaker wires and RCA interconnect cables near to AC cords and component power supplies. Placing wires and cables close to AC lines often results in hum.

  • Page 16: If You Need Service

    THX subwoofers 110 VOLT (U. S.) MX-5000 Mk II 7.0 amp 3AG External 1/4" x 1 1/4" slow-blow 1/4" x 1 1/4" slow-blow MX-350 6.0 amp 3AG External 1/4" x 1 1/4" slow-blow 1/4" x 1 1/4" slow-blow MX-5000 Mk II internal: MX-350 internal: Contact your dealer or M&K with a complete description of the problem.

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