PHASE CONTROL
The Phase Control switches allow the TRM10.1/TRM12.1 to be acoustically aligned with other speakers in your sys- tem. 0˚,
Setup Procedure
1)Place all your speakers and any acoustically significant components in their working location in the listening environment.
2)Insert a sine wave signal into the audio path. Be careful to turn down the level before turning on the amplifiers.
3)Choose a frequency that corresponds to the crossover frequency between the TRM10.1/TRM12.1 and the full- range speakers.
4)From the listening position, alternate between the TRM10.1/TRM12.1 and the full range speakers and adjust the levels until they have the same acoustic output. Use an SPL meter, a microphone on a VU meter, or your ears to accomplish this.
5)With all speakers on, try the 0˚,
6)Set the TRM10.1/TRM12.1 gain control according to your preference. This will not affect the acoustic alignment of your system.
Here is a list of some items that can affect acoustic alignment: relocating speakers, changing the TRM10.1/TRM12.1 Low Pass frequency, changing the acoustic environment (i.e., traps, diffusors, etc.), and/or changing the listening position.
Although this procedure produces the maximum achievable acoustic gain for your system, listening tests may still lead you to prefer another setup.
Example of how phase misalignment between high frequency speakers and a subwoofer can cause cancellation
