10. HOME THEATER USAGE
The subwoofer in a home theater system has a critical role to play in the enjoyment of your
system. First, all the low end from the five main channels is reproduced by the subwoofer.
Everything below 80 Hz is typically routed to the subwoofer, no matter which main channel the
source comes from. This makes perfect sense, as the subwoofer is the only speaker in your
system capable of accurately reproducing low bass.
The other job the subwoofer has is to reproduce the LFE (Low Frequency Effects) channel. This
is a separate channel that the film mixer creates to supplement the low end content of the film.
This LFE channel has a bandwidth of 120 Hz to 20 Hz and is responsible for the dramatic low end
effects that we hear in movies.
The LFE channel is also known as the .1 (point one) channel in a 5.1 (five point one) surround
system, because it reproduces one tenth of the bandwidth of the other channels – hence .1.
If you are using your subwoofer in a surround sound home theater system, make sure that you
connect the subwoofer to the XLR or phono subwoofer output on your home theater receiver or
processor and that you set your receiver or processor for small speakers with the subwoofer
selected (“On” or “Yes” in the set-up menu). Both the subwoofer channel (the combined low end
from all the main channels) and the LFE channel will be properly blended in your receiver or
processor and sent to your subwoofer through this connection.
NOTE: For maximum enjoyment of your MK Sound satellite/subwoofer system, be
sure to set your receiver or processor to “Small” speakers with the subwoofer
selected (“ON” or “Yes” in the set-up menu).
11. TROUBLESHOOTING
Your MK Sound subwoofer amplifier provides high reliability and, in the rare event service is ever
required, easy modular replacement of parts. This section of the manual will help you to solve or
diagnose most problems that can occur with your subwoofer. In the event that a fuse blows,
ALWAYS replace it with a fuse of the correct value to avoid malfunction of the unit or even a fire
hazard. Use of an incorrect fuse value will void your warranty.
A. If your subwoofer has no output.
1. Make sure that the subwoofer is plugged into an AC outlet that you know is active and that is
the power cord is securely plugged into the back of the subwoofer.
2. Make sure that the “POWER” switch is set to the “AUTO” or “ON” position. If you hear no
output with the switch set to “AUTO”, move the switch to the “ON” position.
3. Check the “BASS LEVEL” control and make sure that it is set above the “MIN” position. Rotate
it clockwise, if it is set to the “MIN” position.
4. Check the Power ON LED on the subwoofer’s back panel. If the LED is not lit (usually green),
check the fuse. ALWAYS unplug he subwoofer before changing the fuse. If the element inside the
fuse is broken, replace the fuse with a new one of the same value. If the new fuse blows
immediately, contact your MK Sound dealer.
5. If the Power LED is lit, but you still hear no sound, try this test: Disconnect the phono
interconnect cable from the back of the receiver or processor. Touch the tip of the connector. If
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