My 2013 S6 came with the B&O system. At first it sounded OK (I used to build Pro audio demo cars for companies like Sony, Kenwood, JL Audio, Alpine, etc back in the day) After a few months, I noticed a distorted buzzing sound coming from the rear of the car. Low or high volume, it sounded like a bad cone/driver/voice coil issue. It was intermittent, occurring at higher volume levels on bass heavy songs, but also appeared at lower volumes randomly. FYI I never turned the "bass" setting up, and prefer a "flat" sound to a heavy "bass" and "treble" curve. At my first service appointment, I mentioned this, and after they "diagnosed" it, they claimed nothing was wrong. Over the next few months it progressively got worse. Eventually the "blown speaker noise" went away, as did the low end response of the system. Took the car in again and the dealer claimed nothing was wrong. "a system diagnostic test shows all speakers are functioning" was their response. I know better. They still refuse to replace the sub woofer module. Willing to bet any amount of money that my car has speakers that don't work. Its obvious there is a lack of low end response, but the dealer refuses to acknowledge it. I'm convinced it is the sub module, and interested in alternative options... Anyone have a link to replacing or upgrading the B&O Sub as referenced in this thread?
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