Subwoofer Phase Alignment Using The Autophase - Genelec SE Operating Manual

Subwoofer Phase Alignment Using the AutoPhase

The AutoPhase automatic subwoofer phase calibration process can individually select the optimal phase
alignment setting for the subwoofer in the loudspeaker system for a specified crossover frequency and
reference loudspeaker. The optimal phase alignment results in the best flatness of the acoustic response
within the subwoofer-to-loudspeaker crossover region.
For optimal performance, the AutoPhase process should be rerun every time the crossover frequencies
for the subwoofers are changed. Also, if you change the subwoofer Distance value in the Acoustical
Settings Editor for Subwoofer, the AutoPhase process must be rerun for best performance.
Please note that when you run AutoCal™ for the entire loudspeaker system, the option to run AutoPhase
is also available.
In order to run the subwoofer phase calibration process, the measurement microphone must be connected
to the computer using the Network Interface, and the microphone must be placed at the primary listening
position.
To access the automatic subwoofer phase alignment or AutoPhase, enter the Acoustic Wizard, select the
AutoCal™, and click "Yes". This opens the AutoCal™ window presenting a five-point process of automatic
calibration. To directly access the AutoPhase, find step number five, "Run AutoPhase", and click the
"AutoPhase" button.
This opens the AutoPhase window, presenting the SE7261A on the control network. For this subwoofer,
select in the drop down boxes the Crossover, Channel, and Loudspeaker.
The Crossover defines the crossover frequency for the subwoofer.
The Channel is the audio output channel for the test tone in the subwoofer. The loudspeaker must be
connected to reproduce this audio channel, and the audio cable must be connected from the subwoofer
to the 8130A. The Loudspeaker is the reference loudspeaker for subwoofer phase alignment. One of the
loudspeakers connected to the subwoofer is selected as the reference loudspeaker.
After crossover frequencies and reference loudspeakers have been defined for the SE7261A subwoofer,
click the "Calibrate" button to start the AutoPhase process.
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