[TSX] help with a strange audio whine...
#1
Racer
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[TSX] help with a strange audio whine...
equipment in question: stock acura nav headunit with amp bypass spliced in, monster cable micro xln 4ch cable, jl audio 300/4 amp
Even with my gains turned all the way down, I get a high pitched squeel coming from the speakers, though mainly from the front tweeters, it may be coming out of the back door speakers, but I can't tell. If I use the crossover to cut out high frequencies on the amp, the squeel goes away (though I want those frequencies, I was just testing) .. so at least the squeel can be crossovered and filtered out...
Here's the weird part .. if I touch the rca connector that's plugged into the amp, like the gold plated outer part of the plug that's exposed, the squeel goes away, completely. In fact, if i hover my finger a bit over the plug, i can hear the squeel getting attenuated and it's pitch and db fluctuate, and then ultimately if i just touch the outer plug, the squeel is killed dead.
As i mentioned previously, I'm using a 4ch .. so 4 rca cables get combined into one cable and that's what is run down the length of the car, and then it splits back out to 4 channels. Here's the even weirder part: I only need to touch one of the plugs for the squeel to stop on all the speakers .. front left, front right, rear left, rear right; it doesn't make a difference, as long as i'm touching one of those plugs, the squeel stops everywhere.
any ideas? I know it's hard to properly verbalize, here's a picture to illustrate where i'm touching:
-vasu
Even with my gains turned all the way down, I get a high pitched squeel coming from the speakers, though mainly from the front tweeters, it may be coming out of the back door speakers, but I can't tell. If I use the crossover to cut out high frequencies on the amp, the squeel goes away (though I want those frequencies, I was just testing) .. so at least the squeel can be crossovered and filtered out...
Here's the weird part .. if I touch the rca connector that's plugged into the amp, like the gold plated outer part of the plug that's exposed, the squeel goes away, completely. In fact, if i hover my finger a bit over the plug, i can hear the squeel getting attenuated and it's pitch and db fluctuate, and then ultimately if i just touch the outer plug, the squeel is killed dead.
As i mentioned previously, I'm using a 4ch .. so 4 rca cables get combined into one cable and that's what is run down the length of the car, and then it splits back out to 4 channels. Here's the even weirder part: I only need to touch one of the plugs for the squeel to stop on all the speakers .. front left, front right, rear left, rear right; it doesn't make a difference, as long as i'm touching one of those plugs, the squeel stops everywhere.
any ideas? I know it's hard to properly verbalize, here's a picture to illustrate where i'm touching:
-vasu
#3
Racer
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yeah it's the amp i got from you .. and yeah the gains are all the way down .. i really can't explain it, it's like there's some residual charge or something that's getting dumped into me and killing the squeal
have you ever heard of this el dude? touching the outside of the plug and having it get rid of a noise?
(and on a side note: if you haven't already sent the speakers yet, don't worry about it, I think i'm just going to get the MBQ, unless you sent them already and i'll experiment)
-vasu
have you ever heard of this el dude? touching the outside of the plug and having it get rid of a noise?
(and on a side note: if you haven't already sent the speakers yet, don't worry about it, I think i'm just going to get the MBQ, unless you sent them already and i'll experiment)
-vasu
#4
Originally Posted by vasu
Here's the even weirder part: I only need to touch one of the plugs for the squeel to stop on all the speakers .. front left, front right, rear left, rear right; it doesn't make a difference, as long as i'm touching one of those plugs, the squeel stops everywhere.
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