M&K Sound Professional Powered Subwoofer Operation Manual - page 7
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Now, play some music through your system to make sure that the satellite (main) speakers are working properly.
Once you confirm that they are, slowly advance the “BASS VOLUME” control.
The subwoofer should begin to play. Set the “BASS VOLUME” control to 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. If you still have no success, contact your M&K Sound dealer.
Note the V12 model has a fixed gain marked as “THX MODE” at volume control.In this position the volume is intended
to be adjusted by the receiver or processor bass management only.
By simply rotating (clicking) the volume control out of the fixed THX mode – the function will be as a normal adjustable
control for volume.
NOTE: Once you have achieved a rough subwoofer level setting, refer to the system set-up guide found later in this
manual.
NOTE: When your subwoofer is switched to the “AUTO ON” position, it will use a slight amount of electricity when
in Standby. If you are concerned about power usage, you may want to switch the subwoofer off instead. Switching
the unit off is also a good idea if you know that you will not be using it for some time.
5. WHERE TO PLACE YOUR SUBWOOFER
M&K Sound subwoofers perform well in most room locations. With a properly tuned speaker system, you should hear deep
bass coming from the front of your system as if your satellites and subwoofer were one big system rather than separate
speakers.
One proven way to find the best location for your subwoofer is to first place the subwoofer at the listening position. Run
music with good bass content through it and then go over to the area where you believe the final subwoofer placement will
be. Listen to how the room reacts to deep bass being played. As you walk around that area, you should find places where
the bass sounds deep and well defined and places where the bass sounds weak and less well defined. The place where
you hear the tightest bass with the most impact is probably the best location for your subwoofer.
We recommend that you place your subwoofer as close to a solid wall as possible. Avoid placing your subwoofer farther
than a few inches away from any wall surface as the reflected sound from the wall will interfere with the direct sound coming
from the subwoofer and create phase anomalies that will be destructive to good bass performance. Also try to avoid corners
that are near doorways or openings.
Sometimes the best sound results from aiming the subwoofer’s drivers directly into the wall (1” to 2” away from the wall
itself.)
If you are using multiple subwoofers, sometimes putting them in the same location provides the best solution.
Stacking them is also a possible solution or you could place them side-by-side.
Alternatively, when using multiple subwoofers, you could try placing them in different locations. This may be appropriate
when you have limited choices for placement and none of the available locations seem to work well. Try to place your
subwoofers at equal distances from the listening position to avoid phase problems.
Ultimately, the amount and quality of deep bass you get in your room are dependent on the room itself. Low frequency
sounds are affected most by the size of the room and construction used to build it. All rooms are different when it comes to
reproducing bass, and in any given room, bass quality and quantity change when the subwoofer is moved from one location
to another.