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      01-19-2016, 06:22 PM   #1
Bimmer-M3
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I am wondering if anyone has seen this issue before. When I open the door (either driver's door or any passenger door) I hear one tick sound coming from speaker. I also hear "sometimes" when I lower the volume.

I don't know if this is related but I also have less than 1 sec cut off when listening to music frequently.

Any idea what can be causing this?
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      01-20-2016, 11:43 AM   #2
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Sounds like an intermittent connectivity problem, triggered by vibration.

If the same issue is happening at two speakers at the same time it is most likely a faulty connection of the line level audio signal between the dashboard head unit and the amplifier. As both channels are affected with the same symptom under the same circumstance(s) this indicates something common to both - it would be unusual for the same issue to happen independently among two separate channels.

Cause? In order of probability and ease of tracing:
1 - loose connector. Reseat audio harness connectors at back of head unit and amp unit (in trunk)
2 - loose connector. Reseat speaker harness in amp unit.
3 - loose connectors. Reseat connectors on the front two speakers in door.
4 - failing wire. Use voltmeter and trace continuity. (ugh)
5 - failing amplifier. Swap in a replacement and check problem.

Does this happen only with the front two channels or all four?
Does this happen only with the door speakers or with all front speakers?

Other possibility - a ground connection that has less than 100% integrity. That would be tough trying to trace and remedy.

Good luck.
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      01-20-2016, 01:03 PM   #3
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Quote:
Originally Posted by hlmiii View Post
Sounds like an intermittent connectivity problem, triggered by vibration.

If the same issue is happening at two speakers at the same time it is most likely a faulty connection of the line level audio signal between the dashboard head unit and the amplifier. As both channels are affected with the same symptom under the same circumstance(s) this indicates something common to both - it would be unusual for the same issue to happen independently among two separate channels.

Cause? In order of probability and ease of tracing:
1 - loose connector. Reseat audio harness connectors at back of head unit and amp unit (in trunk)
2 - loose connector. Reseat speaker harness in amp unit.
3 - loose connectors. Reseat connectors on the front two speakers in door.
4 - failing wire. Use voltmeter and trace continuity. (ugh)
5 - failing amplifier. Swap in a replacement and check problem.

Does this happen only with the front two channels or all four?
Does this happen only with the door speakers or with all front speakers?

Other possibility - a ground connection that has less than 100% integrity. That would be tough trying to trace and remedy.

Good luck.
Thanks for the info. I will try to trace the problem. One thing I would like to mention is there was an aftermarket audio system connected in the car and previous owner removed it and returned it to stock by professional audio shop. At least that what he said
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      01-20-2016, 01:17 PM   #4
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Hmmmmm .... then I'd definitely start with connectors/connections. Also look for aftermarket harnesses, left over/unconnected wires, etc., for additional clues.
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      01-20-2016, 08:47 PM   #5
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Quote:
Originally Posted by Bimmer-M3 View Post
I am wondering if anyone has seen this issue before. When I open the door (either driver's door or any passenger door) I hear one tick sound coming from speaker. I also hear "sometimes" when I lower the volume.

I don't know if this is related but I also have less than 1 sec cut off when listening to music frequently.

Any idea what can be causing this?
You might want to post this on the Electronics forum.
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