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BOSE sound changed updating PCM

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I updated my PCM 2.1 (model C) with the 2.1 2012 Europe maps DVD. Everything seems to have gone fine BUT the BOSE sound system sounds different, like with less stereo or bass.

Does anyone know about that? Should the BOSE system have been updated too? In what way?

Thanks for your help.

997 4S Cabrio from 2007 with PCM and BOSE sound system.

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It should not have but the PCM does control certain integral Bose amplifier settings such as fade and balance digitally over the MOST bus. Somehow these settings must have been changed. You have to go into the sound management menu and reset things to your taste. Just toggle through. There is a depiction of the car that will show up on the screen with arrows front to back and side to side. I have not looked at it for a while as I replaced the PCM with an Alpine unit.

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  • 2 weeks later...

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