Only the door, tweeters, and subwoofer are powered by the B&O amp. The center and rears are direct to the ACM.since I don't see it mentioned here those with the b&o won't get any benefit from the speaker setting changes to the acm as the acm isn't what is powering the speakers. the B&O dsp is the amp for all speakers and sub and is connected to the acm threw usb to receive audio data to produce sound and leaves the speaker positions unpopulated in the acm plug.
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