To Next PageTo Next PageHow to stop MK Sound MX-700 thump when turning on?
If you hear a thump through your MK Sound Subwoofer every time you turn the system on while using the "FROM PREAMP" input terminals, switch to the speaker wire "FROM AMPLIFIER" input terminals. This thump is likely generated by the preamp, receiver, or surround sound processor.
What to do if MK Sound MX-700 cuts out at high volume?
If your MK Sound Subwoofer cuts out or becomes intermittent after prolonged operation at high volume, unplug the unit and let it sit for at least half an hour. After that time, plug it back in. It should operate normally. This may occur because, after hours of continuous operation at extremely high volume levels, a protection circuit may kill the power to the Subwoofer.
Why is my MK Sound Subwoofer volume low when using amplifier terminals?
If your MK Sound Subwoofer has very little output when using the "FROM AMPLIFIER" terminals, make sure that the input cables are in phase. Reverse the (+) and the ( — ) connections for ONE CHANNEL ONLY at the "FROM AMPLIFIER" terminals. If the problem remains, put the cables back as they were.
How to fix MK Sound MX-700 with no output?
If your MK Sound Subwoofer has no output, ensure it is plugged into an AC outlet. Check the "BASS LEVEL" control and make sure it is set above the "MIN" position, rotating it clockwise if needed. Examine the red LED on the Subwoofer's back panel. If it's unlit, check the AC fuse next to the LED (unplug the Subwoofer before changing the fuse) and replace the fuse if the element inside is broken. If the red LED is lit, turn the "BASS LEVEL" control to "MIN", plug a standard RCA cable into the "FROM PREAMP" jacks, and lightly touch the plug at the free end of the cable while slowly turning the "BASS LEVEL" control clockwise. If you hear noise from the Subwoofer when you touch the cable, the Subwoofer is functioning, and you should look elsewhere in your system for the problem. Also, make sure...
Why does my MK Sound MX-700 Subwoofer hum?
A hum or buzz in your MK Sound Subwoofer can often be due to the Subwoofer reproducing a 60 Hz hum frequency, which originates elsewhere in your system. To address this, avoid running speaker wires and RCA interconnect cables near AC cords and component power supplies. Reroute your cables if necessary. To identify the source, remove all input cables to the Subwoofer, but leave it plugged into the AC outlet and carefully turn the "BASS LEVEL" control up towards the "MAX" position. If you hear hum coming from the Subwoofer's speaker driver, the Subwoofer is the source of the hum. If you hear no hum or less hum, the problem is probably coming from another component. Hum can also be caused by AC ground loops. If the Subwoofer is plugged into a separate AC outlet, try plugging it into the same ...
All safety and operating instructions should be read and adhered to.
Do not place product on unstable surfaces; use manufacturer-recommended accessories.
Operate from correct power source, avoid overloading and liquid entry.
Refer servicing to qualified personnel; use correct replacement parts and safety checks.
Place subwoofer against a wall, preferably in a corner for best structural strength and listening position.
Experiment with driver orientation; aiming into the wall may yield best results.
Test locations by listening at the position to find the best bass impact.
Place multiple subwoofers in the same location or at equal distances to avoid phase cancellation.
Room size and construction significantly affect bass quantity and quality.
Use RCA-type jacks for preferred connection to Subwoofer's INPUT jacks.
Use speaker wire connections for specific models (MX-70B, V-125, etc.).
Do not use TAPE OUT jacks as they have a fixed output level.
Specify minimum power ratings for switched outlets when plugging in subwoofer.
Connect Subwoofer's INPUT jacks to preamp-level outputs of processors or receivers.
Connect Subwoofer to preamp outputs of stereo amps or preamps.
Use a Y-connector to split signal to feed two subwoofers from one output.
Connect specific subwoofer models (MX-70B, V-125, etc.) using speaker wire.
Certain models (MX-700, MX-200, etc.) cannot use speaker wires.
Run speaker wire from amplifier's Left output to Subwoofer's Left FROM AMPLIFIER terminals.
Make matching connections for the Right channel speaker wire.
Connect Satellite speakers and Subwoofer directly to amp/receiver using separate wires.
Connect Satellite speakers to the Subwoofer's input terminals for convenience.
Connect Satellites to one output and Subwoofer to another if amp has two sets.
Requires amp/receiver with Preamp/Main Output and Power Amp/Main Input jacks.
3 channel filters require dedicated subwoofer output jack.
Turn off component filters; do not run with multiple filters.
Set BASS LEVEL to MIN, then plug in AC cord. Expect a thump sound.
Keep Subwoofer plugged in 24/7 for normal operation and convenience.
Play bass-heavy music, switch PHASE on subwoofer, listen for most bass.
Test each subwoofer individually for phasing when using two.
Use pink noise and spectrum analyzer to find optimal phase setting.
Ensures mid-bass frequencies are in phase to avoid cancellation.
Experiment with speaker placement for optimal sound balance.
Sets upper rolloff, fine-tuning transition between Subwoofer and Satellites.
85 Hz is recommended for best blend in most systems, especially M&K Satellites.
Goal is balanced acoustic output, not necessarily flat electrical output.
Bypass internal filter when using component with built-in Low-Pass filter.
Provides improved impact, definition, output, and dynamic range.
Place in same location or at equal distances to avoid phase cancellation.
Run one wire/interconnect to each Subwoofer; adjust BASS LEVEL accordingly.
Use Subwoofer Output jack for multichannel Home Theatre systems.
May prefer higher playback level for video sources with less deep bass.
Keep 2-3 feet clearance from TV unless subwoofer is magnetically shielded.
Preferred connection is SUBWOOFER OUTPUT (or MONO) RCA jack.
Connect to front Left/Right speaker outputs if no subwoofer output jack.
Set Center channel WIDE/NORMAL switch to NORMAL for proper bass delivery.
Use spikes for carpet coupling or inverted spikes with rubber feet for hard floors.
Inserts are 1/4-20, compatible with most speaker feet/spikes.
Use washer and jamb nut to secure feet, preventing damage to insert/foot.
Experiment with placement; slight elevation improves distortion cancellation.
Low Pass Filter setting is critical for MX models; consider below 85 Hz.
Install MX-70B vertically or horizontally; ensure proper grille placement.
Orient MX-700/VX-100 horizontally or vertically for maximum room coupling.
MX-700 can be rack mounted; contact M&K for kit.
Check power, BASS LEVEL, and red LED/AC fuse status.
Protection circuit activates due to overheating; unplug and cool down.
Test function by touching RCA cable plug while adjusting BASS LEVEL.
Double-check input cables and speaker wires for defects.
Woofer may cut out due to overheating; unplug and let it cool.
Check input cable phase; reverse connections for one channel if needed.
Refer to Phasing Test; reverse speaker connections or switch PHASE control.
Switch to speaker wire FROM AMPLIFIER terminals to eliminate thump.
Avoid running cables near AC cords; reroute cables to eliminate hum.
Remove input cables; if hum persists, Subwoofer is source.
Try plugging into same outlet as amplifier or reversing AC plug polarity.
Remove input cables; if noise persists, contact dealer/factory.
Disconnect cord, remove cap, replace with identical fuse type only.
Lists required fuse types and values for U.S. standard fuses by model.
Lists required fuse types and values for IEC standard fuses by model.
Contact dealer or M&K with model, serial number, purchase date, and problem description.
Do not return speakers for service without prior authorization.
Three year limited parts and labor warranty; transferable. Excludes abuse, misuse, etc.
Location, speaker aiming, small speaker setting, calibration, and phase are key.
Equidistant from listening position, symmetrical to room surfaces.
Best in corner for output/response; use listening position walk-around test.
Place in same location or at equal distances to avoid phase cancellation.
Position surrounds for THX speaker setup, usually left/right of listening position.
Install all wiring and interconnects properly.
Always use processor/receiver's subwoofer output.
Aim front speakers vertically and horizontally using a laser level for imaging.
Set High-Pass filters ON (SMALL), turn off Dialog Normalization and Bass Peak Level Management.
Follow specific instructions for Pro-Logic processor/receivers.
Turn on THX filters (80 Hz), set center channel to Normal, turn off limiters.
Calibrate input level per processor/receiver manufacturer's instructions.
Use digital input when available for digital sources.
Set all channels to the same level using a Sound Level Meter.
Check phase for main speakers and subwoofer/main speakers at 80 Hz crossover.
Play familiar content to verify overall system performance and recheck if needed.
Check settings for each input and mode; some require separate entry.
Write down all processor settings for future reference.
This document is an operation manual for Miller & Kreisel (M&K) powered subwoofers, covering models MX-700, MX-200, MX-125 Mk II, MX-105 Mk II, MX-70B, VX-100, V-125, V-75 Mk II, and VX-7 Mk II. It provides comprehensive instructions for setup, operation, and maintenance of these deep bass powered subwoofers, designed to enhance audio and multichannel audio/video systems.
M&K powered subwoofers are designed to reproduce deep and powerful bass frequencies, complementing satellite or main speakers in an audio system. They are non-directional below approximately 100-150 Hz, meaning their placement does not affect the perceived direction of bass sounds, which are instead localized by higher frequency overtones from the satellite speakers. All M&K powered subwoofers feature exceptionally sharp (36 dB/octave) low-pass filters to remove unwanted midbass and midrange frequencies, ensuring that the subwoofer only reproduces the intended low-frequency content.
General