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

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

Summary

Safety Instructions

Electrical and Servicing Precautions

Use safe accessories, power sources, avoid overloading, liquid entry, and unauthorized servicing.

Operation with THX Components

Testing the Subwoofer (THX Mode)

Steps to test the subwoofer's operation in THX mode after connecting cables.

Calibrating the Subwoofer (THX)

Low Pass Filter Switch (THX)

Bass Level Switch (THX)

Setting Subwoofer Level (THX)

Method for setting subwoofer level using a THX controller and sound level meter.

Using Two Subwoofers (THX)

Operation with a Non-THX Processor

Low Pass Filter Switch (Non-THX)

Bass Level Switch (Non-THX)

Wiring with Non-THX Processor;Preamp

Satellite;Subwoofer Phasing Test

Phasing Test Method One

Phasing Test Method Two

Fine-Tuning Subwoofer Placement

Troubleshooting

No Output Troubleshooting

Steps to diagnose and resolve issues when the subwoofer has no output.

Audio Performance Issues

Hum and Buzz Resolution

Identifying and fixing hum or buzz issues originating from the subwoofer or system.

Replacing the External Fuse

Procedure for safely replacing the subwoofer's external fuse.

Service and Support

Contacting M&K for Service

MK Sound MX-150THX, V-125THX Specifications

General

Type	Subwoofer
Manufacturer	MK Sound
Model	MX-150THX, V-125THX
Frequency Response	MX-150THX: 20-200 Hz +/- 3dB; V-125THX: 25-200 Hz +/- 3dB
Driver Size	1 x 12 inch
Enclosure Type	Sealed
Inputs	Line-level RCA
Outputs	Line-level RCA