powered subwoofers operation manual MX-SERIES: MX-300, MX-200, MX-125 Mk II, MX-105, MX-70B V-SERIES: V-125, V-75 Mk II, VX-7 Mk II Miller & Kreisel Sound Corporation 10391 Jefferson Boulevard Culver City, CA 90232 USA (310) 204-2854 FAX (310) 202-8782 © 1997 Miller & Kreisel Sound Corp.
powered subwoofers page 2 TABLE OF CONTENTS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. SAFETY INSTRUCTIONS................................................................................3 INTRODUCTION........................................................................................4 WHERE TO LOCATE YOUR SUBWOOFER....................................................4 SUBWOOFER HOOK-UP.................................................................................
powered subwoofers page 3 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user of the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. CAUTION: TO PREVENT THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
powered subwoofers page 4 2. INTRODUCTION Congratulations! You have just made perhaps the most exciting and dramatic addition that you could make to your audio or audio/video system. The new dimension of deep and powerful bass provided by your M&K Deep Bass Powered Subwoofer will thrill and excite you. We encourage you to read this owner's manual, as there is a great deal of information provided here to help you get the best possible performance.
powered subwoofers page 5 STANDARD AMPLIFIER/SPEAKER WIRE CONNECTIONS Many M&K subwoofer owners hook up their Subwoofer by connecting it to their receiver or amplifier using speaker wires. To do so, you make the same kind of connections that you would use for your Satellite (or main) speakers, except that both the left and right channels go to the Subwoofer. (If you are using two Subwoofers, connect one channel only to each Subwoofer). NOTE: You cannot connect the MX-125 Mk II using speaker wires.
powered subwoofers page 6 You now have two options for connecting your Satellite speakers. SATELLITE SPEAKER WIRING OPTION 1 NOTE: For the MX-105, MX-70B, V-125, V-75 Mk II, or VX-7 Mk II, see below. With this option, you connect the wiring for the Satellites directly to the Subwoofer. There is no performance advantage with this method, but it may require less speaker wire and be more convenient. 1. 2.
powered subwoofers page 7 FIGURE 2 - SATELLITE SPEAKER WIRING OPTION 1 (ALSO SHOWS USE OF THE SPEAKER-LEVEL HIGH-PASS FILTER) LOW PASS FILTER 75 (Hz) L LEFT/MONO BASS LEVEL RIGHT + 100 60 50 FROM PREAMP PHASE 125 MIN MAX LEFT RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR.
powered subwoofers page 8 In the MX-300, MX-200, and MX-125 Mk II, a full-range signal (including deep bass) is fed to your Satellites. To roll off (filter) the signal fed to the Satellite speakers for biamplification, you must: 1. Have a separate amp and preamp OR a receiver or integrated amp that allows you to separate its amp and preamp stages. 2. Use a surround sound processor or receiver that has built-in high-pass filters and a subwoofer output jack. 3.
powered subwoofers page 9 If you are using two Subwoofers, run the left channel interconnect cable to the left Subwoofer and the right channel cable to the right Subwoofer. USING THE HP-80 OR VF-80 ELECTRONIC HIGH-PASS FILTERS The M&K HP-80 and VF-80 Electronic High-Pass Filters can improve the performance of any system that allows for separation of its preamp and power amp stages by filtering the bass signal fed to the main amplifier and Satellite speakers.
powered subwoofers page 10 play. Set the "BASS LEVEL" control where the Subwoofer sounds in balance with the Satellite speakers. If the system is not working properly, unplug the Subwoofer and check all of your connections. Call your dealer or the factory if you cannot solve any problem. The best way to set the level of the Subwoofer is to do it by ear, listening over several hours or days to familiar recordings.
powered subwoofers page 11 6. USE OF THE "LOW PASS FILTER" CONTROL The back panel control "LOW PASS FILTER" 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 18 dB/octave up to 125 Hz, where the filter shifts to 36 dB/octave. In most systems, including M&K Satellites, 85 Hz gives the best blend.
powered subwoofers page 12 A simple rule to remember is that you get more bass when you move the Subwoofer towards any wall or corner. Moving it away from a wall or corner gives you less bass. Remember that the floor also loads the Subwoofer, and that maximum bass is found with the woofer on the floor in a corner. The Subwoofer will probably sound its best when it is on the floor, within a foot or two of one wall, either in or within a few feet of a corner.
powered subwoofers page 13 front Left and Right channel speaker outputs (do not use the Center channel speaker output). VERY IMPORTANT: When the Subwoofer is connected to the Left and Right amplifier outputs (this means using speaker wires), and the controller is in Pro-Logic mode, the Center channel WIDE/ NORMAL switch MUST be set to the NORMAL mode.
powered subwoofers page 14 MX-70B: The MX-70B gives a very high level of performance in a compact cabinet. Therefore, it is likely to be installed in both vertical and horizontal locations. To avoid having its inverted driver exposed in installations where the cabinet is horizontal, the MX-70B has two speaker grills. If your MX-70B has a solid grille over the inverted driver, leave this grille in place.
powered subwoofers page 15 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. Then perform the test in Step 4. 4. If the midbass range (the area of transition between Subwoofer and Satellite speakers) sounds weak: Refer to Section 5, Phasing Test, on page 10.
powered subwoofers page 16 IF YOU NEED TO REPLACE THE EXTERNAL FUSE: Disconnect supply cord before changing fuse. Replace fuse only with same type. Remove the fuse cap. If the fuse cap has an arrow printed on it, push the cap in and turn it counterclockwise. If the fuse cap has a slot in it, use a flat head screwdriver to turn it counterclockwise. Look carefully at the fuse. If the wire filament inside the glass is broken, replace the fuse ONLY with one of the identical size and value.
