Instruction/ maintenance manual of the product MX-SERIES MK Sound
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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-150 THX V -SERIES: V -125 THX Manufactured under license from Lucasfilm Ltd.
page 2 THX subwoofers T ABLE OF CONTENTS 1. SAFETY INSTRUCTIONS ................................................................................................ 3 2. INTRODUCTION ........................................................................
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.
page 4 THX subwoofers 2. INTR ODUCTION Congratulations! Your new M&K THX ® subwoofer truly represents the state-of-the-art in subwoofer performance.
THX subwoofers page 5 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 output.
page 6 THX subwoofers 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" position and the "BASS LEVEL" toggle switch to the "THX" position.
THX subwoofers page 7 For the V-125 THX , the "CALIBRATED" level is 4 dB lower than the "THX" level (switch set to "THX"). Set the control to this mark if you have only one subwoofer in the system (such as in a very small room).
page 8 THX subwoofers OPERATION OF THE "BASS LEVEL" SWITCH When using the subwoofer with a non-THX processor, preamp, etc., this switch should be set to the "VARIABLE" position. The subwoofer level can then be set independently to match your speakers.
THX subwoofers page 9 FIGURE 5 - WIRING ONE SUBWOOFER TO AN AMP OR PREAMP WITH ONE SET OF PREAMP OUTPUTS If your surround processor has only one PREAMP OUTPUT (and no SUBWOOFER OUT), and you do not have an M&K High-Pass Filter or crossover, you must use a Y-connector to feed the amplifier and subwoofer.
page 10 THX subwoofers To connect the subwoofer, run shielded RCA - RCA interconnect cables from the outputs on your component to the "INPUT" jacks found on the subwoofer's backplate.
THX subwoofers page 11 DO NOT PLUG THE SUBWOOFER INTO A SWITCHED OUTLET ON ANOTHER COMPONENT. THE SUBWOOFER CAN DRAW UP TO 400 WATTS FROM THE AC LINE. IT MUST BE PLUGGED INTO A SOLID AC LINE. Now, play some music through your system to make sure that the Satellite speakers are working properly.
page 12 THX subwoofers Here are two methods of setting the correct phase with your subwoofer. PHASING TEST METHOD ONE Set the switch labelled "SUBWOOFER PHASE" to the "+" position. Then, play a familiar CD, LP, laserdisc or tape with steady, consistent bass content.
THX subwoofers page 13 The amount and quality of bass you hear is dependent on the room itself. Low frequencies are affected by a room's size and type of construction. Rooms differ when it comes to reproducing bass, and in every room, bass quality changes when the subwoofer is moved from one location to another.
page 14 THX subwoofers 9. USE OF SPIKED FEET WITH "MX" SUBW OOFERS If your M&K THX subwoofer is an "MX" push-pull dual driver subwoofer, we have enclosed a hardware kit consisting of four black metal spikes, threaded at one end and tapering to a sharp point at the other.
THX subwoofers page 15 2. If the midbass range (the area of transition between Subwoofer and Satellite or L/C/R speakers) sounds weak: See Section 7, PHASING TEST, on page 11. Reverse the position of the "SUBWOOFER PHASE" switch on the back panel of the subwoofer.
page 16 THX subwoofers 0797MX150THX &V125THX.PM6 REPLACEMENT FUSE VALUES 110 VOLT 220 VOLT 220 VOLT (3 AG 1/4" x 1 1/4" slow blow) (5 X 20 mm IEC-127/III) MX-150 THX 4 amp 2 amp T 1.6 A (time-lag) V-125 THX 2 amp 1 amp T 800 mA (time-lag) 11.
THX subwoofers page 17.
An important point after buying a device MK Sound MX-SERIES (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought MK Sound MX-SERIES yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data MK Sound MX-SERIES - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, MK Sound MX-SERIES you will learn all the available features of the product, as well as information on its operation. The information that you get MK Sound MX-SERIES will certainly help you make a decision on the purchase.
If you already are a holder of MK Sound MX-SERIES, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime MK Sound MX-SERIES.
However, one of the most important roles played by the user manual is to help in solving problems with MK Sound MX-SERIES. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device MK Sound MX-SERIES along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
