M&K Sound Professional Powered Subwoofer Operation Manual - page 9
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When you hear the best balance between stereo image localization, maximum low bass impact and well defined output in
the mid-bass, you have found the correct setting.
If you hear little or no difference when adjusting the phase control knob between 0 – 180, set it to the 0 degree (default)
position.
A more accurate method of establishing the phase relationship between your satellites and subwoofer or subwoofers is to
use a pink noise generator and a spectrum analyzer. Place the microphone at the listening position and run pink noise
through the system. Take note of the mid-bass region (70 - 100 Hz) on the analyzer’s display. The setting that shows the
most output in that region and also shows the best low bass response has the correct phase.
7. CROSSOVER BYPASS SETTING
All modern Home Theater receivers and processors provide the necessary high-pass and low-pass filtering (bass
management) to ensure proper integration of satellite/subwoofer speaker systems. When using your subwoofer with one of
these components it is recommended to set the “CROSSOVER CONTROL” on the back of the subwoofer to the “BYPASS”
position. This leaves the full control for crossover settings to the handled by the receiver/processor build in bass
management functions, and will in most setups provide the best integration between satellite/subwoofer.
When connecting THX certified subwoofers, the crossover control “BYPASS” position is marked “THX” to directly indicate
the correct setting.The bass management section in THX certified receivers and processors are optimized in their filter
design to make smooth and easy integration between subs and satellites speakers.It is recommended to carefully studying
your receiver or processor manual for speaker setup, as correct settings is important to achieve best possible sound.
8. CROSSOVER CONTROL
If your receiver or processor does not have an internal crossover, you can use the “CROSSOVER CONTROL” to variable
set the upper roll-off point of the subwoofer to match your satellites.
The control of fine-tuning the transition of sound between satellites and subwoofer is defined to set “CROSSOVER
CONTROL” to 80 Hz when using larger main speakers and 110 Hz when using smaller satellite speakers.