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Old 08-09-2005, 05:53 PM   #1
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Default Whine and no thump

I'm still having this issue outlined in this old thread:

http://www.bonnevilleclub.com/forum/...022&highlight=

Long story short, I have constant speaker whine through my 6x9'* and occasionally my subwoofer amp does not work.

For the whine: I've tried ground loop isolators to no avail. My power wire is no where near my RCA'* (which are only a foot or two long because I used the stock headunit, thus wiring back to the trunk). I've redone, checked etc my grounds. I've disconnected the cap, which actually made the whine a little louder and the bass loss more frequent.

For the bass: Just yesterday after a 45 minute bass-less drive, I thumped on the amp with my hand and it kicked on. The "Protect" light was not on before I hit it.

Any ideas about either?
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Old 08-09-2005, 06:05 PM   #2
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It'* the line level converter....

As I understand your old post you move from hi - to low level
via a converter and not a hi-in on the amp....

Sounds like a sensitivity issue between the amp (the click on/off)
and the line level it'* being fed.....

Just a thought...

The alt noise was worse for me with low level feeds as opposed
to the hi level input.... both made noise but the low level was worse
for sure.... Finally found a good level where I could remove the
line suppressor and have a very low wine hardly audiable.

Anyway AS AN EXPERIMENT..... many MANY amps do not desire
a seperate channel ground they float their ground independant
of the HU so for grins try just wiring up the HOT (+) side of your
hi level inputs and see if the noise goes away (what did the trick
for my amp using Hi level inputs)

The click on issue is sounding like an amp sensitivity issue or
circuit failing.
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Old 08-09-2005, 06:15 PM   #3
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Hmm, that might be a good idea. I used the line level convertors because I couldn't find any connector that matched the high level inputs on my Fosgate 300.4 amp (I think, it'* been a while) powering my 6x9'*. The pins look like spades, but are skinnier than the small gauge (red) spades I've seen. I don't suppose you have any insight on those?
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Old 08-19-2005, 07:44 AM   #4
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what are you using for the remote turn on for the amp??? power ant??? one some cars that will cause alt noises. not sure about bonne yet though.
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Old 08-19-2005, 10:06 AM   #5
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Power antenna lead. Update: When I removed the cap, I left the extra wiring in case I put the cap back in. I took it out last week, the amp has worked everytime since and whine was greatly reduced, but still present. You think I should try a different remote on?
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Old 08-19-2005, 11:35 AM   #6
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get this.... If i leave the car sit for a few days i will get some noise through the speakers, but after i drive the car for 2 miuntes the noise is gone....I think low voltage will cause whine
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Old 08-19-2005, 09:24 PM   #7
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i would try this. disconnect the remote line from the ant. get you a short wire and jump from you 12volt (batt) to your remote line that will make the amp turn on. turn on the radio and see if the whine is still there. if it is then that not the prob. but if its gone then run a seperate line from the fuse panel.
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