Installation manual

Dolby
®
Model CP650 Installation Manual B-Chain Alignment
4-27
Saving Changes.....
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Level: xx
Polarity: Normal
>Center Noise: On
OnOn
On
Subwoofer Speaker Polarity Check
Polarity:
Normal / Inverse
20–80 Hz
Level
Using the center menu button, move the cursor to
Center Noise, then rotate the front-panel knob
to On.
Press the center menu button to move the cursor
to Polarity:
Use the front-panel knob to switch between
Normal and Inverse polarity.
Note the change in the average level of the RTA
bands between 20 and 80 Hz. There should be a
level DECREASE when the polarity is Inverse.
The polarity of the subwoofer wiring is incorrect
if you do not see a decrease. In this case, reverse
the subwoofer speaker wiring connections.
If the subwoofer wiring polarity is correct, you
will see a level increase between 20 and 80 Hz on
the RTA display when the front-panel knob is
rotated to Normal.
OK
Press the right OK button to save the settings.
Note: The subwoofer polarity will always be reset to the
“normal” setting. “Inverse” is a temporary setting for
this test only.