OK when i have been accelerating i have been getting a high pitch whistle coming from the speakers. the harder a accelerate the higher it gets. dose anybody know what it could be?
thanks, Paul

OK when i have been accelerating i have been getting a high pitch whistle coming from the speakers. the harder a accelerate the higher it gets. dose anybody know what it could be?
thanks, Paul
Are you sure it's not the gap between your window and your car? :bowrofl:
That's what mine is anyway, pos lol

OK when i have been accelerating i have been getting a high pitch whistle coming from the speakers. the harder a accelerate the higher it gets. dose anybody know what it could be?
thanks, Paul
Alternator whine, Check your grounds, and did you use high quality RCA's? I find the cheap cheap ones do this

']Alternator whine

Mmmmm....serve chilled, goes well with chicken:bowrofl:

Sorry.....just a stupid moment then.......

lol im sure its not the window and about the RCAs i cant remember but i had the wired up and it was fine, but then i moved the amp to the boot and it started to **** up

lol im sure its not the window and about the RCAs i cant remember but i had the wired up and it was fine, but then i moved the amp to the boot and it started to **** up

Got any pictures??? that would help ....of all the wiring were the amp is that is

arr i did but i deleted em, didnt think id ever use em. if i thik of it tomorrow i may take some

Yeah, check grounds first. Next thing, use shielded RCAs of decent quality. It does pay to spend at around 100 or so on a half-decent set of RCAs. After that, could be burnt tracks, or dry solder joint somewhere.

Oh...wondering...has anybody been playing with balanced signals in cars?

reroute rcas away from audio/car electrical lines. if they need to cross do it at right angles to minimise the interference.

Oh...wondering...has anybody been playing with balanced signals in cars?

Yes, my Eclipse 8061 has balanced outputs...
Still trying to get to the bottom of my own noise issues though, seems to be induced at the source rather than along the cable path so some sort of filter might be the go.

http://www.crutchfieldadvisor.com/S-Wxk9hWKa3ZA/learningcenter/car/noise_suppressors_installation_guide.html?page=2

Strange thing.

When i ran my Audison amp, I had no noise. However once I changed it to the Eclipse Class D amps, I had chronic noise. At first I thought it was the amp that was the problem, but, I checked that, and the amp was fine.

I am yet to research the point of the noise, as I was able to lower it (but it still can be heard).

Sometimes, really odd things can create noise, I remember a story of a grounded speaker wire used for midbass to create noise only in the left hand midrange channel.

Strange stuff.

i said i would get a pic, so here it is. not the best pic. but battery was gonna die, so better then nothing

http://i272.photobucket.com/albums/jj168/thebeast14086/amp005.jpg

i said i would get a pic, so here it is. not the best pic. but battery was gonna die, so better then nothing

http://i272.photobucket.com/albums/jj168/thebeast14086/amp005.jpg
gee how long is that earth?
i normally dont like to use earths longer than 30cm...

the earth is about 30 odd cm

Get rid of the lugs on the end too and just shove the wire in the end of the terminal..
I find the less stuff there is, the less stuff there is to go wrong

']Get rid of the lugs on the end too and just shove the wire in the end of the terminal..
I find the less stuff there is, the less stuff there is to go wrong


lugs? the claw things?

Try pulling the head unit out of the console, leaving it all plugged in, sit it on a sheet or something and fire it up, see if the noise is still there. I just solved a similar issue with mine. I bought new head unit, good leads, solid earth, the lot. Had it all connected and running before fully installing it in centre console and with engine going, not a peep. Thought brilliant, put it all in, gave it a test before packing up for the night and the whine was back worse than ever. Turns out, because the original head unit was earthed through the mounting chassis, having it earthed externally was creating an earth loop that was sending everything nuts. I insulated my head unit mounting so the only earth was the one on the loom, fixed the problem right up.

Try pulling the head unit out of the console, leaving it all plugged in, sit it on a sheet or something and fire it up, see if the noise is still there. I just solved a similar issue with mine. I bought new head unit, good leads, solid earth, the lot. Had it all connected and running before fully installing it in centre console and with engine going, not a peep. Thought brilliant, put it all in, gave it a test before packing up for the night and the whine was back worse than ever. Turns out, because the original head unit was earthed through the mounting chassis, having it earthed externally was creating an earth loop that was sending everything nuts. I insulated my head unit mounting so the only earth was the one on the loom, fixed the problem right up.

Interesting, might be similar to the problem I have - how did you insulate it exactly?

Could be the alternator creating the whine,as it speeds up with the engine speed of course,has it got a surpressor on the back of it?,if not put one on and see if it helps,if not put a filter in the main power line to the amp if you get no luck re routing RCA leads etc

Steve

I used the dodgyest wiring kit ever, what you should do though is just run the RCA up the passenger side, no main harness there with electricity running though, so therefore shouldnt interfere.

Also, just make sure your ground is working correctly. Get a multimeter and test both power and ground, see if the correct voltage is going through. Could be incorrectly grounded, I just drilled a fresh hole and inserted a new bolt for mine, hidden behind the carpet ^.^

This thread still going?

Use a process of elimination to find out which component(s) of the system are inducing the alternator whine.

You know..connect an ipod/cd player directly to your amps in the boot with a short cable to see whether its the source/RCAs causing the whine. Rewire RCAs to see if that's causing the whine, or rewire headunit. It's got to be something. Things just don't happen for no reason.

I had this and it ended up being a dodgy iPod charger that was hard wired to my car electronics system. Wasn't even running audio though it, was just obviously messing with the iPod and making the iPod send the whine to the Hu and stereo

i said i would get a pic, so here it is. not the best pic. but battery was gonna die, so better then nothing

http://i272.photobucket.com/albums/jj168/thebeast14086/amp005.jpg

Er, I'm going to go with that exposed part on the +12v looks to be touching right up on that speaker output