MK Sound MX-350THX manual

THX ® powered subwoofers Miller & Kreisel Sound Corporation 10391 Jefferson Boulevard Culver City, CA 90232 USA (310) 204-2854 FAX (310) 202-8782 © 1997 MILLER & KREISEL SOUND CORP. operation manual Manufactured under license from Lucasfilm Ltd. Lucasfilm and THX are registered trademarks of Lucasfilm Ltd. MX -5000 THX Mk II MX-350 TH X[...]

page 2 THX subwoofers T ABLE OF CONTENTS 1. SAFETY INSTRUCTIONS ................................................................................................ 3 2. INTRODUCTION .............................................................................................................. 4 3. WHERE TO PLACE YOUR SUBWOOFER .........................[...]

THX subwoofers page 3 The exclamation point within an equi- lateral triangle is intended to alert the user of the presence of important op- erating and maintenance (servicing) instructions in the literature accom- panying the appliance. The lightning flash with arrowhead, within an equilateral triangle, is in- tended to alert the user of the pres- [...]

page 4 THX subwoofers 2. INTR ODUCTION Congratulations! Your new M&K THX ® subwoofer truly represents the state-of-the-art in 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 provide[...]

THX subwoofers page 5 To connect the subwoofer, run a shielded RCA - RCA interconnect cable from the SUBWOOFER OUTPUT jack on your THX controller to the "LEFT/MONO" "INPUT" jack on the subwoofer's backplate. See Figure 1 below. Some THX controllers have a pair of stereo subwoofer outputs, while others have a single mono out[...]

page 6 THX subwoofers to the Left subwoofer and the Right cable to the Right subwoofer. See Figure 2 on page 5. TESTING THE SUBWOOFER (THX MODE) Once all of the interconnect cables are in place, you are just about ready to plug in the subwoofer. Set the "LOW PASS FILTER" toggle switch to the "THX MODE" position. Set the "BA[...]

THX subwoofers page 7 and it gives you maximum output level, dynamic range, and headroom. In your listening room, the "ANECHOIC" position will actually produce a rising output below about 30 Hz. Its response is not as flat (accurate) as the "THX" position and it limits the subwoofer's maximum output and dynamic range. For p[...]

page 8 THX subwoofers knob sets the upper rolloff point of the Subwoofer, eliminating mid-bass and midrange that are being reproduced by your Satellite speakers. The control is a means of fine-tuning the transition between your Subwoofer and Satellite speakers, and it provides a rolloff of 12 dB/octave up to 125 Hz, where the filter shifts to 36 dB[...]

THX subwoofers page 9 FIGURE 3 - WIRING ONE SUBWOOFER TO AN AMP OR PROCESSOR WITH A SUBWOOFER OUTPUT JACK (NON-THX) SURROUND PROCESSOR SUBWOOFER (or MONO) OUT 10391 Jefferson Blvd Culver City, CA 90232 310/204-2854 MILLER & KREISEL SOUND CORP. RIGHT INPUT REFERENCE 80 Hz 24 dB/ OCTAVE Made in U.S.A. T 6 AMP 120 VAC 50/60 Hz LEFT/MONO SLOW-BLOW [...]

page 10 THX subwoofers WIRING WITH THE M&K HP-80 OR VF-80 HIGH-PASS FILTERS (NON-THX ) The M& K HP-80 and VF-80 High-Pass Filters can improve the sound of systems by filtering the bass fed to the main amp and Satellite speakers. These filters will give your system greater dynamic range, lower distortion, and an increased maximum output. To [...]

THX subwoofers page 11 to feed these filters. To connect one of these filters, run one set of shielded RCA - RCA interconnect cables from the receiver, amp or preamp's MAIN OUTPUT to the input jacks on the HP-80 or VF-80. Run another set of interconnects from the high frequency output jacks on the filter to receiver or amp's POWER AMP inp[...]

page 12 THX subwoofers an additional total of 6 dB of output. Wiring with two subwoofers is simple. Instead of running two interconnect cables to one subwoofer, just run one interconnect to each subwoofer, using the "LEFT/MONO INPUT" jack on each subwoofer. You don't need a Y-connector. See Figure 4 (page 9), or Figure 6 (page 10). 7[...]

THX subwoofers page 13 output. When this happens, the midbass is cancelled. Re-do this test any time you move any of your speakers or the listening position. 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 localizatio[...]

page 14 THX subwoofers Buzzes and rattles can be cured or improved by applying glue, tape, or pads in the area where the objects are vibrating against each other. Try felt pads between objects that cannot be taped or glued together (such as picture frames buzzing against walls). One subwoofer is sufficient in a stereo system because the human ear-b[...]

THX subwoofers page 15 e. If the red LED is still lit, set the "BASS LEVEL" switch to the "VARIABLE" position. Turn the "BASS LEVEL" control to "MIN". Plug a standard RCA cable into the "LEFT/MONO" "FROM PREAMP" jacks. Lightly touch the plug at the free end of the cable. Then turn the &quo[...]

page 16 THX subwoofers REPLACEMENT FUSE VALUES 110 VOLT 220 VOLT 220 VOLT (U. S.) (U. S.) (IEC 127-2/III) MX-5000 Mk II 7.0 amp 3AG 4.0 amp 3AG T 3.15 A External 1/4" x 1 1/4" slow-blow 1/4" x 1 1/4" slow-blow 5 x 20 mm time-lag MX-350 6.0 amp 3AG 3.0 amp 3AG T 3.15 A External 1/4" x 1 1/4" slow-blow 1/4" x 1 1/4&[...]