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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Sub woofers Cutting Out

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      01-05-2011, 08:32 PM   #1
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Sub woofers Cutting Out

I recently had my stereo replaced on my 2011 328xi with HiFi due to various issues with it. The first problem was the radio would sound like garble on occasion so the dealer did a software update to fix it. After the software update, on occasion there wouldn't be any sound at all (radio, CD, Ipod even warning chimes!) so they decided to replace the whole headunit.

Now it appears that the the sub woofers are cutting out. Most of the time it's okay and there is ample bass, but on occasion the sound is completely flat. A few times I've suddenly felt the bass kick in halfway through a song. I'm wondering if there might be a loose connection somewhere. Could anyone guide me on where to check the wiring for the subs? Thanks in advance!
Kafer is offline   Canada
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      01-05-2011, 08:36 PM   #2
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2006 330xi  [3.22]
There is an amp in the rear, driver's side trunk area.

Lift up the plastic cover....it's held in by clips. Then you ave access to the harness. Unless the wires are loose in the harness, you may have another problem.
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      01-05-2011, 08:38 PM   #3
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Do you have the 6fl ipod adapter? To be honest, the quality of the wire that's needed to use the ipod sucks. I am always fiddling with it to get the sound to be correct. It drives me insane. I can't wait to upgrade to combox and CIC so that I never have to use that stupid wire again.

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