MK Sound MX250 - User Manual

Summary

Important Safety Instructions

Introduction

Voltage Selector and Power Cord

Detachable Power Cord

Details how to attach the power cord to the subwoofer before plugging into the AC outlet.

Subwoofer Placement Guide

Subwoofer Placement Guidance

Multiple Subwoofer Placement

Advises on placing multiple subwoofers in the same or different locations for optimal performance.

Room Acoustics and Bass

Explains how room size and construction affect bass reproduction and the need for experimentation.

Magnetic Shielding

Notes that the subwoofer is magnetically shielded to prevent interference with CRT TVs.

Subwoofer Hook-Up

Wiring Using Line-Level Inputs

Explains connecting to receiver/processor pre-amp outputs via XLR or phono connectors for best performance.

Speaker Wire Connections

Plugging In the Subwoofer

Use of the Phase Control

Bypass Setting

Low-Pass Filter Control

Using Multiple Subwoofers

Home Theater Usage

Troubleshooting

No Subwoofer Output

Lists checks for no sound, including power, bass level, and connections.

Troubleshooting Common Issues

Subwoofer Intermittency

Explains the protection circuit that may shut off power due to overheating at high volumes.

Low Output from Speaker Wire

Addresses low output when using "FROM AMPLIFIER" terminals, suggesting phase checks.

Weak Mid-Bass Range

Suggests checking phase testing for weak mid-bass transition between subwoofer and satellites.

Persistent Hum or Buzz

Provides steps to identify and resolve hum issues, including cable routing and ground loops.

Unusual Sounds

Guides on diagnosing unusual noises by removing input cables to isolate the source.

Service Information

System Set-Up Guide

Speaker Set-Up Steps

Front Speaker Placement

Advises on equidistant placement of front and center speakers relative to the listening position.

Subwoofer Placement

Details optimal corner placement and experimentation for subwoofer positioning.

Surround Speaker Placement

Guides on positioning surround speakers relative to the listening position and side walls.

Speaker Set-Up Steps

Dolby Digital;THX Setup

Explains settings for high-pass filters, bass management, and dialog normalization for Dolby/THX.

Pro-Logic Setup

Provides setup instructions for Pro-Logic processors, including filters and limiters.

Channel Calibration

Details how to calibrate all speakers and the subwoofer to a reference level using a sound meter.

Speaker Set-Up Steps

Check Phase

Ensures all main speakers and the subwoofer are wired in phase for optimal sound.

System Verification

Advises playing familiar content to verify system performance and rechecking settings.

Appendix A Speaker Placement Diagrams

Appendix B Specifications

MK Sound MX250 Specifications

General

Type	Powered Subwoofer
Driver Size	12 inches
Frequency Response	20 Hz - 200 Hz
Amplifier Power	250 Watts RMS
Frequency Response Tolerance	±3 dB
Enclosure Type	Sealed
Inputs	RCA