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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Rear and mid speakers not working



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      08-28-2018, 07:55 PM   #1
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Rear and mid speakers not working

2008 328i

Every since I bought my car used a few years ago my rear speakers have never worked. I just found out I had speakers under the seats lol. They not working either. I dont have the L7 set up just the Hi-Fi. My front door speakers work fine. Is it possibly the amp thats gone bad? Ive checked the connections to the amp they all are secure. Are the front door speakers connected to the amp as well? If so I dont know why they are working and the other 4 are not. Any suggestions why my rear and mid speakers are not working at all?
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      08-28-2018, 08:51 PM   #2
Ali-E90
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All oem speakers are connected to the oem amp.

Maybe previous owner had an aftermarket setup that they pulled out of the car before selling, and maybe didn't reconnect it all back to the oem amp?
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      08-28-2018, 08:57 PM   #3
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Quote:
Originally Posted by Ali-323i View Post
All oem speakers are connected to the oem amp.

Maybe previous owner had an aftermarket setup that they pulled out of the car before selling, and maybe didn't reconnect it all back to the oem amp?
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      08-28-2018, 09:43 PM   #4
ctuna
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You can measure the speaker resistance from the amp connector.
Before taking out the speakers to test .

https://www.e90post.com/forums/showthread.php?t=138949

Stock door speakers measured 3 ohms at the amp connector
Stock under seats measure 2.1 ohms at the amp connector
Rears should be the same a front doors.

BMW stereo types
http://www.e90post.com/forums/showthread.php?t=352586
http://www.e90post.com/forums/attach...2&d=1266451970
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/showthread.php?t=343673
http://www.e90post.com/forums/showthread.php?t=138949
http://www.e90post.com/forums/attach...1&d=1209780605
http://www.e90post.com/forums/attach...1&d=1209780865
http://www.e90post.com/forums/showthread.php?t=641323
http://bmwcoders.com/forum/3-er-8/bm...1-e92-e93-291/
http://technicpnp.com/menuDiagrams/d...e90_92_93.html
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...3&d=1169133185
http://www.e90post.com/forums/attach...4&d=1278871872

Last edited by ctuna; 08-28-2018 at 09:51 PM..
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