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Old 06-23-2003, 12:00 AM   #1
chogoten
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front driver side speaker

I have a non-HK system, and my front driver side speaker doesn't work. I took it to BMW twice already. Both times they put in new speakers and it came back with the sound working, but within a week or two the speaker went dead. Both times. I'm calling the dealership for service again tomorrow, but you guys have any idea what is going on? A shorted wire somewhere? i doubt 2 brand new speakers would just blow out within the week.
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Old 06-24-2003, 02:07 PM   #2
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i have the same problem also, my speakers dont work. Hmmm...
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Old 06-26-2003, 10:43 AM   #3
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okay $200 later after BMW refused to cover me under warranty b/c I'd fixed my speakers too much (they said the subwoofer was causing it). I thought it was BS because the subwoofer isn't connected to any of the speakers, but it turns out they were right. My audio install place hooked up my sony xplod 760 W amp directly into the left bank of the factory amplifier. According to them, this messed up the resistance of the speaker because the ohms were reduced or something, thereby causing my speaker to short out whenever I cranked it up a bit. And the reason the right side never blew out was because the right bank was left untouched.

How should I tell the audio installation place to correctly install the amp? Please help I don't want to go through another pair of driver side door panel speakers and want to get it fixed ASAP
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Old 06-26-2003, 10:46 AM   #4
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simple you never go back there again. They dont know how to work on a bimmer
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Old 06-26-2003, 11:09 AM   #5
chogoten
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well then what should i do to fix this? i don't know much about wiring amps to subs or whatnot, but would someone be kind enough to briefly explain how to connect my aftermarket amp to the factory amp the correct way?

edit:

i have a non-HK system...and according to one of the DIY done in an old post, the correct wires for an HK system are

rear right +: pin 16, blue/black,
rear right -: pin 8, brown/orange
rear left +: pin 37, yellow/black,
rear left -: pin 29, brown/orange
switched +12V remote turn on: pin 10, white

are these the same wires to tap into for a stock stereo system as well?

Last edited by chogoten; 06-26-2003 at 11:21 AM.
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Old 06-26-2003, 07:23 PM   #6
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anybody? cmon i know someone out there has installed an aftermarket amp to a factory amp on a non-HK system. The installers didn't use a LOC either in case anyone replies
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Old 06-26-2003, 08:37 PM   #7
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OKAY I AM CONFUSED! I checked the wires that the install place spliced into...THEY ARE IN THE RIGHT SPOT!! furthermore, I looked for maybe the front woofer or any other front speaker to be damaged, but there wasn't! the front woofer wire wasn't even touched!!! I have to complain to my dealer and prove that it wasn't the subwoofer causing it...WHAT ELSE COULD BE SHORTING OUT MY FRONT WOOFER!!!!

HELPPP...PLEASE
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Old 06-26-2003, 11:37 PM   #8
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Here is a link to the wiring diagram for our cars. http://forum.e46fanatics.com/showthr...threadid=46021
As long as the aftermarket amp inputs were spliced into the inputs for the stock amp then there should be no problem. You should use an ohm meter and check the problem speaker and wire impedence at the stock amp connection. Unplug the conection and measure between the 2 wires that output to the front speaker (use the diagram in the above link). The speaker and wire should read slightly over 2 ohms. Then check the positive speaker wire resistance to ground..............it should be "open" or very high (Mohm).

If those check out ok, and the aftermarket amp is wired the correct way then try this........ swap the wiring output from the stock amp to the left and right front speakers. If the problem switches to the passenger side front speaker then the problem is your stock amp. If it stays with the drivers side, then there is a problem with the speaker mounting and/or wiring going to that speaker. Troubleshooting is always a pain........
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Old 06-27-2003, 03:11 AM   #9
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thanks for the great info - it really helped a lot!



but what should I do if the ohm readings aren't normal?

edit: i'm pretty sure the audio store installed the aftermarket amp correctly. It's spliced into the rear left and right speakers, the yellow and brown wires (left), and the blue and brown wires(right) and it seems to work perfectly.
(info taken from http://www.projectbimmer.com/BmwWiring.htm)

Last edited by chogoten; 06-27-2003 at 03:20 AM.
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Old 06-27-2003, 08:06 AM   #10
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Basically, if your ohm readings are not normal then the troubleshooting should focus on the wiring for that speaker. Note: Those readings will only be normal if the suspect speaker is not already damaged. If the speaker is already damaged then the check needs to be done with a good OEM speaker...............I couldn't remember if you currently have a "bad" speaker in the driverside location?

Unfortuneately, these type of problems usually take time to figure out because the problem occurs over a span of time and is not always present.
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Old 06-27-2003, 11:24 PM   #11
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ok i tested the resistance for the front driver side woofer (newly replaced)...and got about 1 ohm. This was lower than the expected 2, so I tested the front passenger woofer (which works fine) and got the same result of 1 ohm. So I'm assuming that the multimeter was off or not calibrated and that all is well with the wires? It is very old school after all.

I'm going to try your suggestion of swapping passenger side and driver side, but how do I get the wires out of the harness without cutting the them?

any suggestions would be most helpful as I'm stumped as how to swap the two pairs of wires
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Old 06-28-2003, 09:24 AM   #12
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Sorry, but you will need to cut them near the amp connector and splice the swap. Just splice it temporarily using electrical tape. Later, (hopefully after the problem is fixed) you can put it back and splice it permanently and solder the wires. Either way you need to cut the wires to do the check. What this check will do is confirm that the problem is either comming from the amp or is isolated to the driver side speaker and or wiring. The only thing is that you are now waiting to see which speaker is the first to fail............. Did you check the speaker positive wire to ground ohm reading?
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Old 06-28-2003, 02:55 PM   #13
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yeah the positive wire to the ground ohm reading was all the way to the left, a very high number i believe.

I'll take my car to the dealership to get my $200 refund about voided warranty BS before I cut the wires so I can show that the wires were untouched. THanks for all your help
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