am the original owner.SHIPPING TO BE PAID BY BUYER (estimated to be less than $80.00 by FEDEX). This subwoofer was almost $2k retail, it was used in a NON Smoking home theater. Only Minor marks on cabinet, minor scratches. It appears to be working but no sound, it may be the auto on sensing circuit. The amp and speakers seem to be working. Please check my perfect (100%) feedback on eBay, USAudiomart and AudiogoN (all user names are Alfa_lover), you may buy in confidence. PAYPAL ADDS 3.5% THE PHOTOS ARE GENERIC PHOTOS FROM THE WEB. The M&K Sound MX-350 THX ULTRA subwoofer uses dual ultra-high performance, long-throw 12” magnetically shielded drivers, capable of extremely high output with superb articulation, clarity, and authority. An unique isobaric design. A sealed box, (not a ported design) The onboard power amplifiers employ M&K SOUND Balanced Push-Pull Dual Drive Amplifier technology, which incorporates proprietary Headroom Maximizer IV circuitry to prevent amplifier clipping and the resulting unwanted audible artifacts. Delivering massive power, these innovative amplifiers produce extremely clean sound and extraordinary articulation, along with enormous output and incredible dynamic range. M&K SOUND’s Deep Bass sealed-box design produces significant low frequency extension, with in-room response flat to well below 20 Hz for lifelike power and authority, that other subwoofers simply cannot match. M&K SOUND’s Push-Pull Dual Driver Configuration delivers a major improvement in bass detail and articulation by virtually eliminating even-order harmonic distortion and doubling the sound power per watt of amplifier power, for 6 dB of additional output. The MX-350 THX ULTRA is a high-output powered subwoofer that uses two ultra high-performance 12” long-throw, coated pulp cone, magnetically shielded drivers in a sealed Deep Bass enclosure which utilizes M&K Sound’s Push-Pull Dual Driver Configuration to virtually eliminate distortion and add 6 dB of output! A continuously variable phase adjustment from 0-180 degrees allows for perfect integration of the subwoofer with any speaker system and listening room.
Speaker level and line level connections are included for maximum set-up flexibility. An automatic On/Standby switching circuit activates the amplifier when a signal is detected and turns it off after a period with no signal. The all-discrete 350 Watt power amplifier circuit features exceptional deep bass power and sonics and uses M&K Sound’s Balanced Push-Pull Dual Drive Amplifier technology, with proprietary Headroom Maximizer IV circuitry to prevent amplifier clipping and provide enormous output and intense dynamics with great clarity. PUSH-PULL DUAL DRIVER DEEP BASS CONFIGURATION WITH NEW FEATURE: SELECTABLE BASS EXTENSION M&K's Deep Bass sealed-box design produces significant deep bass output,with an in-room response flat to frequencies well below 20 Hz. Many other THX subwoofers have vented cabinets, giving them an extremely sharp rolloff (24 dB/octave or more) below the lower limit of their "flat" response. By reproducing bass frequencies lower than 20 Hz, the MX-350THX has a lifelike power and authority that these other subwoofers simply cannot match. For those who want even more deep bass, the MX-350 MK II THX now gives you an additional choice of bass response one that is anechoically flat to below 20 Hz! This position means that in a room, the subwoofer will produce a rising bass characteristic below 20 Hz for a very powerful (thanks to the subwoofer's output capability) deep bass. And, of course, M&K's Push-Pull Dual Driver Configuration delivers a major improvement in bass detail and articulation by virtually eliminating even-order harmonic distortion and doubling the sound power per watt of amplifier power, for 6 dB of additional output! LOW-PASS FILTER OPTIONS: VARIABLE M&K FILTER; THX BYPASS;
4th ORDER LINKWITZ-RILEY (THX) LOW PASS FILTER The MX-350THX features a two-position subwoofer phase (polarity) switch. Because the MX-350THX is designed for low (preamp) level inputs (THX/surround controllers, preamps, crossovers), it does not include speaker level inputs. In response to our customers' requests for a full range of options, the MX-350THX has switchable low pass filter choices. First is M&K's standard variable low-pass filter, which is continuously adjustable between 50 and 125 Hz. Next, for THX systems, you can bypass the subwoofer's filter to use the internal filter found in all THX controllers. With the high pass 80 Hz filter used in THX controllers, the combination acoustically forms a 4th order Linkwitz-Riley crossover. The linear phase of these filters optimizes speaker performance and simplifies speaker set-up, because in virtually all cases, regardless of the room and the locations of the listeners and speakers, the overlapping acoustic output of the satellites and subwoofer will sum near- perfectly. This makes a seamless "splice" between the upper range of the subwoofer and the lower range of the satellite speakers, all without calibration or adjustment. NEW, HIGH-PERFORMANCE MAGNETICALLY SHIELDED DRIVERS The MX-350 MK II THX uses two brand-new, long-throw 12" magnetically shielded drivers. These drivers are capable of extremely high output, with great articulation, clarity, and authority, and are part of why the MX-350 MK II THX is capable of such incredible output levels. Their magnetic shielding means that you can place the subwoofer near the television! The MX-350 MK II THX cabinet dimensions are 23" high by 15 1/4" wide by 19 5/8" deep. It weighs 82 lbs. Description The MK Sound MX-350 is a powerful subwoofer that will add massive power to your home theatre setup. This MK Sound 12-inch subwoofer is powered by dual high-performance long throw drivers that give you a precise audio experience. With a rated power of 350W RMS, the MK Sound MX-350 produces a frequency range between 18Hz-200kHz which gives you superb sound reflection with a high output. The onboard amplifier on this MK Sound subwoofer employs MK Sound’s push-pull technology, which dramatically improves audio quality by virtually eliminating even-order harmonic distortion. Moreover, this technology gives the MK Sound MX-350 an additional 6 dB of output. Variable phase adjustment between 0-180 degrees allows you to use this MK Sound 12-inch subwoofer mostly for home theatre configurations. This MK Sound subwoofer also features an automatic standby circuit which activates only when there is a definite input and deactivates to save power. Product Identifiers
Brand Miller & Kreisel, M&K
Model MX-350 THX
MPN MKMX350THX
UPC 5704956011879 Key Features
Speaker Type Powered Subwoofer
Mounting Floorstanding
Construction 1-Way
Outdoor/Indoor Indoor Technical Details
Peak Power Handling 350 W
Frequency Responses 18 Hz - 200 Hz
Subwoofer Power 350 watt
Magnetic Shielding Magnetically Shielded
Connectivity Wired
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