powered subwoofers operation manual MX-SERIES: MX-2000, MX-1000, MX-1000cc, MX-100, MX-90, MX-80, MX-70 V-SERIES: V-125, V-100, V-90, V-1B, V-2B, V-3B, VX-4, VX-7 Miller & Kreisel Sound Corporation 10391 Jefferson Boulevard Culver City, CA 90232 USA (310) 204-2854 FAX (310) 202-8782 © 1994 MILLER & KREISEL SOUND CORP.
powered subwoofers page 2 TABLE OF CONTENTS 1. 2. 3. 4. SAFETY INSTRUCTIONS.............................................................................3 INTRODUCTION..........................................................................................4 WHERE TO LOCATE YOUR SUBWOOFER.............................................4 SUBWOOFER HOOK-UP..............................................................................4 STANDARD AMPLIFIER/SPEAKER WIRE CONNECTIONS..................................
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 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 Look at the back panel of the Subwoofer. You will see two RCA input jacks labelled "FROM PREAMP," and two sets of speaker wire input terminals labelled "FROM AMPLIFIER" and "TO SPEAKERS." You must choose to use either the speaker wire inputs or the RCA jack inputs. STANDARD AMPLIFIER/SPEAKER WIRE CONNECTIONS The most common way to hook up the Subwoofer is to connect it to your receiver or amplifier using speaker wires.
powered subwoofers page 6 You now have two options for connecting your Satellite speakers. SATELLITE SPEAKER WIRING OPTION 1 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. Run speaker wire between the Subwoofer's Left channel output terminals and the Left Satellite speaker. a.
powered subwoofers page 7 FIGURE 2 - SATELLITE SPEAKER WIRING OPTION 1 (ALSO SHOWS USE OF THE V-125's HIGH-LEVEL HIGH-PASS FILTER) If your Amplifier has two sets of speaker outputs (e.g., A and B), you can connect the Satellites to one set and the Subwoofer to the other. But if you get weak or no output when you connect your speaker this way, connect both sets of speaker wires to the same output terminals. See Figure 3.
powered subwoofers page 8 Unless you have a V-125, a full-range signal (including deep bass) is fed to your Satellites. To roll off (filter) the signal fed to the Satellite speakers to achieve true 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. Add an M&K Electronic High-Pass Filter to your system. See Page 9 for more information.
powered subwoofers page 9 the left Subwoofer and the right interconnect cable to the right Subwoofer. WIRING WITH THE LP-1S & VF-100 ELECTRONIC HIGH-PASS FILTERS The M&K LP-1S and VF-100 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 PLUGGING IN THE SUBWOOFER Once all the speaker wires or preamp interconnect cables are in place, you are ready to plug in the Subwoofer. Set the "BASS LEVEL" control to "MIN". Then plug the AC cord in. You should hear a thump from the Subwoofer. This is the normal sound of its power supply charging and discharging when it is plugged in and unplugged.
powered subwoofers page 11 Now listen to the same musical passage as you did earlier, concentrating on the mid-bass region. If you hear less bass, the original connections were correct. If you hear more bass, the new connections are correct. If you have two Subwoofers, perform one test for each Subwoofer. When you perform each test, make sure the other Subwoofer is not operating by either unplugging its input cable or its power cord.
powered subwoofers page 12 the "BASS LEVEL" control slightly higher. 8. FINE-TUNING SUBWOOFER PLACEMENT If you have the physical space in your room and the interest to experiment with the placement of your Subwoofer, you may be able to optimize its location and sound. If you want to do this, listen to the Subwoofer after it is hooked up, using a familiar CD, LP, or tape with good bass content.
powered subwoofers page 13 In some cases, however, you may prefer the subwoofer set to a higher playback level for video sources. This may occur when video sources (especially older films and some television) have very little deep bass present.
powered subwoofers page 14 producing a "boomy" sound if it is located in a corner. Always try the subwoofer first in a corner. If it sounds "boomy," move it a few feet out of the corner. 2. While your Subwoofer performs perfectly well directly on the floor, the distortion cancellation of its push-pull design and its frequency response are best when the Subwoofer is slightly elevated. We therefore strongly recommend that you use the enclosed feet to raise the Subwoofer off the floor. 3.
powered subwoofers page 15 c. Check the red LED on the Subwoofer's back panel. If the LED is not lit, check the AC fuse next to the LED. Unplug the Subwoofer before changing the fuse. See instructions on Page 15. If the element inside the fuse is broken, replace the fuse. If it blows again, contact your dealer or M&K. d. If the red LED is still lit, try this test: Turn the "BASS LEVEL" control to "MIN". Plug a standard RCA cable into the "FROM PREAMP" jacks.
powered subwoofers page 16 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 outlet used for your amplifier or receiver, or reverse the polarity of its AC plug. If these suggestions do not solve your problems, contact your dealer or M&K. 6. If there is an unusual sound coming from the Subwoofer with no music playing: Try removing the input cables as described in Step 5 above.