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Old 04-27-2004, 05:09 PM   #1
links_courses
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Unhappy No Sound Left Side - Right Side Fine - Help Please.

I have a strange problem. I am not getting any sound from the left side speakers front AND back EXCEPT I CAN hear sound from the left front tweeter! I removed my Alpine head unit and all the wires seem connected fine.

My current setup:

Alpine CDA-9811 which is driving the rear speakers.
Fosgate components in the front being powered by a Fosgate amp.

The amp and head unit are getting power because the right side of the car has nice sound. However, when I turn the balance all the way to the left, I can hear sound from the tweets in front but nothing else front or back.

What might cause this problem? Thanks for your help.
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Old 04-27-2004, 07:25 PM   #2
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Car Audio, Video, and Security may be better help.
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Old 04-27-2004, 10:06 PM   #3
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Quote:
Originally posted by collegedropout
Car Audio, Video, and Security may be better help.
Moving there now


Brian

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Old 04-27-2004, 10:25 PM   #4
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Sounds to me like your deck may be at fault. Does it behave the same way both playing a CD AND from the tuner?
Trying swapping the left and right RCA cables to the amp and see if the problem on the front stage switches sides. That would eliminate the amp and your components.
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Old 04-28-2004, 05:52 AM   #5
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Good idea. I will try that and see what happens.

Sorry if I put the original post in the wrong forum. Which forum was my original post? I meant it to be here? Duh!
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Old 04-28-2004, 08:04 AM   #6
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check for wiring shorts near the speakers and in the crossover block too. it's possible the tweeter works, but the woofer is shorted somehow.

I'm not sure about the rears, just check the speaker back there too.
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Old 04-28-2004, 08:46 AM   #7
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Check the connection at the speakers. Also put your ear up real close to the mids and see if you can hear anything high pitched.

Is the tweeter cranking all the sound it should or just the insanly high frequencies that the mid could never hope to play?

Did you install everything?
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Old 04-28-2004, 09:11 AM   #8
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I swapped the left/right RCA jacks at the back of the head unit and I can get sound from the right side again when I turn the balance to LEFT. That tells me the head unit is probably not the problem.

I have had some history with left-side components kicking in and out. The amp fuse housing that is near the battery wasn't "holding" the fuse tightly enough and after enough driving vibration, it would periodically allow the fuse to lift just enough to kick out the comps. Strangely, it would only kick out the left side!

There seems to be a bit of that "black arcing carbon" in the seat of the fuse housing. I am now thinking that might be the problem for the fronts and the rears may have been out due to a loose wire but I never noticed.

I am going to swap out a new fuse housing and fuse to see if my problem in the left front is resolved. When I get the chance I will also see if I have a loose connection in that left rear.

Thanks for the help so far and keep the help coming if there is something else you can think of.
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Old 04-28-2004, 09:25 AM   #9
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Now swap the front speaker wires L/R at the amp and try again. This will tell you if the problem is the amp itself or the left-side wiring, xover or woofer.
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Old 04-28-2004, 12:12 PM   #10
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I didn't read that you had an amp.

clean the carbon off that fuse block, and see if you can bend the metal leads enough to maintain a good contact.
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Old 04-29-2004, 05:25 AM   #11
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What is the best way to clean carbon? Is there some kind of solvent that will work? Perhaps I could use a paperclip but that won't really be able to scratch off much. The actual seat that has the carbon is pretty well protected down in its slot.
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Old 04-29-2004, 06:01 AM   #12
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If there's one fuse in the one line powering your amp, how is it going to run one channel, but not the other?
Your fuse maybe a problem, but it's not the problem.
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Old 04-29-2004, 06:26 AM   #13
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That's what I thought in the past so I never checkaed the fuse amp. When I was getting the left front comps to kick out but the left rears were working, I noticed the amp fuse being loose. Whenever I pushed the fuse back in tightly, the left comps worked! Therefore, I assumed the loose fuse was the problem even though it made no sense to me. Why would that have worked?

I just scraped the carbon (not as much as I thought) and bent the fuse leads a tad so the fuse is snugly in its housing. The problem still exists.

I dont have time now but I will inspect the speaker wire connections inside the door panels in the next few days and see if they have come loose.
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Old 04-29-2004, 11:28 AM   #14
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Quote:
Originally posted by redwagon
Now swap the front speaker wires L/R at the amp and try again. This will tell you if the problem is the amp itself or the left-side wiring, xover or woofer.
I'd do this next.

and, also check any fuses that may be in your amp and accessible from the outside.
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Old 04-30-2004, 05:49 AM   #15
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I am almost convinced now that the speaker connections inside the doors are loose or off. I will be removing the door panels tomorrow to check it out.

There are no other amp fuses other than the one under the hood on the power wire.

I think the rear left was probably out and I never noticed until the front comps kicked out.
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Old 04-30-2004, 08:17 AM   #16
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cool, good luck.
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Old 05-01-2004, 12:39 PM   #17
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Yep, it was the speaker wire connectors. They had come off.

I made sure that they would stay on this time and I also took the time to exacto knife away the plastic trim around the woofers on both front doors. That annoying bass buzz at high volumes is gone now!

Thanks for all of your help.
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