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operation manual
VX-1250
Miller & Kreisel Sound, Inc.
9351 Deering Avenue
Chatsworth, CA 91311-5858 USA
(818) 701-7010 fax (818) 701-0369
www.mksound.com
©2004 Miller & Kreisel Sound, Inc.
powered subwoofer
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POWERED SUBWOOFER TABLE OF CONTENTS 1. SAFETY INSTRUCTIONS.......................................................................................3 2. INTRODUCTION................................................................................................4 3. VOLTAGE SELECTOR & POWER CORD.....................................................................4 4. WHERE TO LOCATE YOUR SUBWOOFER.................................................................4 5. SUBWOOFER HOOK-UP.............
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POWERED SUBWOOFER The exclamation point within an The lightning flash with arrowhead, CAUTION: equilateral triangle is intended to within an equilateral triangle, is TO PREVENT THE RISK OF ELECTRIC SHOCK, alert the user of the presence of intended to alert the user of the DO NOT REMOVE COVER (OR BACK). NO USER- important operating and mainte- presence of uninsulated “dangerous SERVICEABLE PARTS INSIDE. REFER SERVIC- nance (servicing) instructions in voltage” within the product's enclo- the liter
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POWERED SUBWOOFER 2. INTRODUCTION Congratulations! You have just made perhaps the most exciting and dramatic addition that you could make to your audio or multichannel audio/video system. The new dimension of deep and powerful bass provided by your M&K VX-series 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. This manual gives you basic hook-up i
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POWERED SUBWOOFER Ultimately, the amount and quality of bass you get in your room are dependent on the room itself. Low frequency bass sounds are affected most by the size of the room and the method of construction used to build it. All rooms are different when it comes to reproducing bass, and in any given room, bass quantity and quality changes when the sub- woofer is moved from one location to another. A simple rule to remember is that you get more bass when you move the subwoofer towards a
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POWERED SUBWOOFER FIGURE 1 - CONNECTING TO A COMPONENT’S SUBWOOFER OUTPUT SUB / MONO OUT SUBWOOFER REF SURROUND PROCESSOR OR RECEIVER This will give you better bass quality than using the speaker inputs, because it bypasses your amp or receiver's amplifier stage. To connect the subwoofer in this way, simply run one or a pair of shielded RCA - RCA interconnect cables from the output jacks on your component to the "LINE LEVEL" jacks on the Subwoofer's backplate. If you run one cable, connect it
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POWERED SUBWOOFER USING SPEAKER WIRE CONNECTIONS Some 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). 1. Run speaker wire between the Amplifier's Left channel output terminals and
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+ POWERED SUBWOOFER 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. FIGURE 4 - SATELLITE SPEAKER WIRING (OPTIONAL) AMPLIFIER OR RECEIVER REF + + SATELLITE SPEAKERS PLUGGING IN THE SUBWOOFER Once all the speaker wires or preamp interconnect cables are in place, you are
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POWERED SUBWOOFER Play a familiar CD, LP, or tape with steady, consistent bass. Set the “PHASE” control to the 0˚ position. Listen care- fully to the mid-bass (70 - 100 Hz) region — the part of the spectrum where electric or string basses and drums are found. Then, adjust the "PHASE" control to the 180˚ position. Now listen to the same musical passage, concentrating on the mid-bass region. If you hear less bass, the previous 0˚ position, would be the correct. If you hear more bass, the new 1
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POWERED SUBWOOFER With two subwoofers, simply run one speaker wire or interconnect to each subwoofer. Because the left and right channel input signals are combined in the subwoofer's input stage, the only thing this changes is amplifier gain. To com- pensate, just set the "BASS LEVEL" control slightly higher. 10. HOME THEATRE USAGE If you are using your subwoofer in a multichannel Home Theatre system, make sure you are using the subwoofer Output jack to connect your subwoofer. Check "Use
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POWERED SUBWOOFER B. If, after operating the woofer at high volume levels for a long time, the woofer cuts out or becomes intermittent: Your subwoofer has a protection circuit that protects it from overheating. After hours of continuous operation at extremely high volume levels, this circuit may cut off the power to the subwoofer. When it activates, the sound may switch in and out rapidly, with a fluttering sound. If this happens, unplug the unit and let it sit for at least half an hour. A
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POWERED SUBWOOFER and 5:00 PM Pacific Time, Monday through Friday, at (818) 701-7010. If you call outside these hours, leave a message, and we will return your call. Alternatively, an e-mail can be sent to service@mksound.com. DO NOT RETURN YOUR SPEAKERS TO THE FACTORY FOR SERVICE WITHOUT OBTAINING PRIOR AUTHORIZATION All M&K powered subwoofers carry a five year limited parts and labor warranty. This warranty is transferable to sub- sequent owners up to three years from the date of original p
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POWERED SUBWOOFER 3. If multiple subwoofers are used, place them in the same location. Stacking is best, but you can also put them side by side. Another option for multiple subwoofers is to place them in different locations. This is appropriate when you have limited choices in locating the subwoofer and none of the available locations work well. Try to place multiple subwoofers at equal distances from the listening position to avoid phase cancellation. C. Locate the surrounds. Determine the
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POWERED SUBWOOFER 3. Turn off all limiters and compressors, auto azimuth controls, auto balance controls, etc. 4. If the processor/receiver/receiver has an input level control, calibrate it per the manufacturer’s instructions. 5. If the component has a digital input, and you are using a source component with a digital output, always use the digital input, not the analog input. H. Set levels for each channel. You can take a measurement at the listening position to establish the reference leve
