MK Sound MX-150THX, V-125THX Operation Manual
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MK Sound MX-150THX, V-125THX Operation Manual

MK Sound MX-150THX, V-125THX Operation Manual

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MX-SERIES:
V-SERIES:
Miller & Kreisel Sound Corporation
10391 Jefferson Boulevard
Culver City, CA 90232 USA
(310) 204-2854
FAX (310) 202-8782
© 1995 MILLER & KREISEL SOUND CORP.
Manufactured under license from Lucasfilm Ltd.
Lucasfilm and THX are registered trademarks of
Lucasfilm Ltd.
MX-150
THX
V-125
THX

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Summary of Contents for MK Sound MX-150THX, V-125THX

  • Page 1 operation manual MX-SERIES: V-SERIES: Miller & Kreisel Sound Corporation 10391 Jefferson Boulevard Culver City, CA 90232 USA (310) 204-2854 FAX (310) 202-8782 © 1995 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 ... SETTING SUBWOOFER LEVEL (THX) ...

  • 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 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. Your subwoofer is compatible with both types. If your THX controller has stereo subwoofer outputs, use a stereo shielded cable, connecting it to the LEFT and RIGHT "INPUT"...

  • 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 it again.

  • Page 7: Setting Subwoofer Level (Thx)

    THX subwoofers For the V-125 , the "CALIBRATED" level is 4 dB lower than the "THX" level (switch set to "THX"). Set the control to this mark if you have only one subwoofer in the system (such as in a very small room). On both the MX-150 and V-125 subwoofer is producing 2 dB and 4 dB more output than the "CALIBRATED"...

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

    THX subwoofers OPERATION OF THE "BASS LEVEL" SWITCH When using the subwoofer with a non-THX processor, preamp, etc., this switch should be set to the "VARIABLE" position. The subwoofer level can then be set independently to match your speakers. The "CALIBRATED" mark is a reference relative to THX levels. For a discussion of this "CALIBRATED"...
  • Page 9 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 MILLER & KREISEL SOUND CORPORATION 10391 Jefferson Blvd, Culver City, CA 90232 310/204-2854 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...

  • Page 10: Using The Subwoofer With The M&K Lp-1S, Hp-80 Or Vf-80 High-Pass Filters

    THX subwoofers To connect the subwoofer, run shielded RCA - RCA interconnect cables from the outputs on your component to the "INPUT" jacks found on the subwoofer's backplate. See Figure 5 on page 9. If your processor has a single subwoofer output, do not use a Y-connector to connect it to both the Left and Right input terminals of the subwoofer.

  • Page 11: Setting Subwoofer Level (Non-Thx)

    THX subwoofers DO NOT PLUG THE SUBWOOFER INTO A SWITCHED OUTLET ON ANOTHER COMPONENT. THE SUBWOOFER CAN DRAW UP TO 400 WATTS FROM THE AC LINE. IT MUST BE PLUGGED INTO A SOLID AC LINE. Now, play some music through your system to make sure that the Satellite speakers are working properly.

  • Page 12: Fine-Tuning The Placement Of Your Subwoofer

    If you hear/measure more bass, leave the switch alone; the new position is correct. This test is necessary because the different distances from each speaker to your ears mean that it is possible that the Subwoofer's output may arrive at your ears out of phase with the Satellites' output.

  • Page 13: Special Method For Placing The Subwoofer

    THX subwoofers The amount and quality of bass you hear is dependent on the room itself. Low frequencies are affected by a room's size and type of construction. Rooms differ when it comes to reproducing bass, and in every room, bass quality changes when the subwoofer is moved from one location to another. A simple rule to remember is that you get more bass when you move the subwoofer towards any wall or corner.

  • Page 14: Use Of Spiked Feet With "Mx" Subwoofers

    THX subwoofers 9. USE OF SPIKED FEET WITH "MX" SUBWOOFERS If your M&K THX subwoofer is an "MX" push-pull dual driver subwoofer, we have enclosed a hardware kit consisting of four black metal spikes, threaded at one end and tapering to a sharp point at the other.

  • 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 MX-150 V-125 Contact your dealer or M&K with a complete description of the problem. Please have the unit's model and serial numbers (found on the back of the cabinet), date of purchase, and your dealer's name. You can call M&K between 8:30 AM and 5:00 PM Pacific Time, Monday through Friday, at (310) 204-2854.
  • Page 17 THX subwoofers page 17...

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