M&K Sound Professional Powered Subwoofer, Руководство по эксплуатации

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D.
If you hear a persistent hum or buzz through the subwoofer:
1. Because the subwoofer is able to reproduce the 50/60 Hz hum frequency, it is often blamed for causing hum that
originates elsewhere in the system. Always avoid running all speaker wires and Phono interconnects cables near to AC
cords and component power supplies. Wires and cables running close to AC lines are a common source of hum. If
necessary, reroute your cables.
2. To identify the source of a perceived hum or other noise, remove all input cables to the subwoofer, but leave it plugged
into the AC outlet. Carefully turn the “BASS LEVEL” control up towards the “MAX” position. If you hear hum or other noise
coming from the subwoofer, then the subwoofer is the source of the noise. If you hear little or no hum coming from the
subwoofer, then the subwoofer is working properly and the problem is coming from another component.
3. 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 receiver or processor. You might also try reversing the polarity of the AC plug. If none of these
suggestions solve the problem, contact your M&K Sound dealer.
E.
If unusual sounds come from the subwoofer with no music playing:
Try removing the input cable. If the sound disappears, the noise is coming from one of your other components. If it does not
go away, the subwoofer may have a problem. In this case, contact your M&K Sound dealer.
12. IF YOU NEED SERVICE
Contact your M&K Sound dealer. Do not send your speaker to M&K Sound directly without obtaining prior authorization.
13. SYSTEM SET-UP GUIDE
The 5 Most Important Items in System Set-up:
1. Find the best location for the subwoofer for maximum output and flattest response (Possibly the corner closest
to the listening position)
2. Aim the front speakers (and the surrounds, if possible) for the flattest response and the best imaging
3. Set all speakers to the “Small” setting for proper High-Pass and Low-Pass Filter Operation to get the lowest
distortion and maximum dynamic range
4. Calibrate all speakers and the subwoofer to the identical level for proper imaging and balance
5. Make sure all speakers are in phase for proper imaging and impact
These instructions will help you making sure that you cover all steps in setting up a multi-channel surround system. In
addition to following this list, make certain that you study and understand the owner’s manual for each and every component
used in the system, especially the processor/receiver.
Have fun and good luck!