MK Sound V-1250THX Operation Manual
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MK Sound V-1250THX Operation Manual

MK Sound V-1250THX Operation Manual

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operation
manual
V-1250
THX
Miller & Kreisel Sound Corporation
10391 Jefferson Boulevard
Culver City, CA 90232 USA
(310) 204-2854
FAX (310) 202-8782
www.mksound.com
© 1999 MILLER & KREISEL SOUND CORP.
Manufactured under license from Lucasfilm Ltd.
Lucasfilm and THX are registered trademarks of
Lucasfilm Ltd.

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  • Page 1 operation manual V-1250 Miller & Kreisel Sound Corporation 10391 Jefferson Boulevard Culver City, CA 90232 USA (310) 204-2854 FAX (310) 202-8782 www.mksound.com © 1999 MILLER & KREISEL SOUND CORP. Manufactured under license from Lucasfilm Ltd. Lucasfilm and THX are registered trademarks of Lucasfilm Ltd.

  • Page 2: Table Of Contents

    V-1250THX subwoofer SAFETY INSTRUCTIONS... 3 INTRODUCTION ... 4 WHERE TO PLACE YOUR SUBWOOFER ... 4 OPERATION WITH THX COMPONENTS ... 5 CONNECTING THE SUBWOOFER TO A THX CONTROLLER TESTING THE SUBWOOFER (THX) ... CALIBRATING THE SUBWOOFER (THX) ... 7 OPERATION OF THE "LOW PASS FILTER" AND "BASS LEVEL" SWITCHES ...

  • 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

    V-1250THX subwoofer Congratulations! Your new M&K THX Select subwoofer 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: Operation With Thx Components

    V-1250THX subwoofer Ultimately, the amount and quality of bass you get in your room are dependent on the room itself. Low frequency bass sounds are affected most by the size of the room and the method of construction used to build it. All rooms are different when it comes to reproducing bass, and in any given room, bass quantity and quality changes when the Subwoofer is moved from one location to another.
  • Page 6 V-1250THX subwoofer 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" terminals on the subwoofer.

  • Page 7: 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 8: Setting Subwoofer Level (Thx)

    V-1250THX subwoofer The +2 and +4 marks indicate the points where your subwoofer is producing 2 dB and 4 dB, respectively, more output than the "CALIBRATED" level. The proper method of setting the level of the subwoofer in THX mode is to use the low frequency pink noise test signal generator built into the THX controller and a sound level meter (available from Radio Shack).

  • Page 9: Operation Of The "Bass Level" Switch

    V-1250THX subwoofer 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"...
  • Page 10 V-1250THX subwoofer FIGURE 4 -WIRING TWO SUBWOOFERS TO AN AMP OR PROCESSOR WITH A SUBWOOFER OUTPUT JACK (NON-THX) BASS LEVEL REFERENCE LEFT/MONO +3 dB VARIABLE +6 dB INPUT CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUE.

  • Page 11: Using The Subwoofer With The M&K Hp-80 Or Vf-80 High-Pass Filters

    V-1250THX subwoofer FIGURE 6 - WIRING TWO SUBWOOFERS TO AN AMP OR PREAMP WITH ONE SET OF PREAMP OUTPUTS BASS LEVEL REFERENCE LEFT/MONO +3 dB VARIABLE +6 dB INPUT CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUE.

  • Page 12: Testing The Subwoofer (Non-Thx)

    V-1250THX subwoofer receiver, amp or preamp's MAIN OUTPUT to the input jacks on the HP/VF-80. Run another set of interconnects from the high frequency output jacks on the filter to receiver or amp's POWER AMP inputs. Last, run interconnects from the subwoofer output jacks to the subwoofer's "FROM PREAMP"...

  • Page 13: Satellite/Subwoofer Phasing Test

    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 14: Troubleshooting

    V-1250THX subwoofer If you want to experiment, move the main speakers or subwoofer towards or away from your listening position, in small increments. When you hear the best combination of stereo image localization and focus with solid midbass impact and output, you have the ideal location.

  • 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

    V-1250THX subwoofer 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.

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