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  1. Buzzing sound when the volume is high

    Main A-Class (W177) Forum
    Hi all, I've recently bought an A180d AMG with advanced sound system option. When I'm checking the sound proofing of the car I've noticed a terrible resonation noise coming from the exhaust area when the volume set above 50 percent. Equalizer of the audio system is set to flat since it's very...
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