05-06-2020, 05:20 AM | #1 |
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High pitched whistling coming from front speakers
My BMW F90 M5 produces annoying high pitched whistle as described bellow:
My car was produced during july 2019 so it has iDrive 7 with Live Cockpit and it has HK audio option. In this configuration sound to front speakers is amplified through RAM (Receiver Audio Module) High. Cross-overs are probably located inside mid-range speakers in front doors because treble speakers are connected to them. My dealer/shop tried to fix it but electrician blindly followed some misinformations in Puma database and changed main Head Unit. It didnt help off course. So I will give them another attempt. Meanwhile I appreciate if anyone could direct me to possible solution or thread somewhere else?
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2019 BMW F90 M5 | 2014 Porsche 991 Carrera 2S | 2013 BMW F01 740dX | 2011 BMW E82 1M Coupe | 2008 BMW E70 X5 3.0d | 2003 BMW E46 M3 Coupe | 2000 Porsche 996 Carrera 4 | 2000 BMW E39 535i | 1998 BMW E39 528i
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05-06-2020, 10:28 AM | #2 |
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Does the sound change pitch when you rev the engine? If yes, then it is alternator whine which is caused by a poor earth connection somewhere in the audio chain.
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05-06-2020, 03:34 PM | #4 |
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