That Dreaded Speaker Whine

[TIMMMAYYY]

This problems only been starting since i've relocated my amp for my splits to under the drivers seat.

Anyway, I start the car up, drive off, no worries no interference or whine through the speakers what so ever. Pull over, stop, turn the car off, go do whatever, come back say 10 minutes later and crank some tunes and theres now whine in the speakers.

Start the car a few hours later and the whine has since left.

Can anyone see a reason for why this problem only occurs when the car has been running, stopped and then started again???

Thanks

Tim

[JR]

thats a tuff one. most and i stress most whine noises are from say power wire being to small for a particular amp, or it is having a earthing problem, where about did u earth it this time? is it a good connection with the chassie? what size wire did you use??

[EnricoPalazzo]

Ive been told if ur power line and Rcas are together u get this. I have the annoying whine, but my Rcas and Amp power wires are no where near eachother

[Fhrx]

The whine is actually electrical interfierance being induced into your RCA cable. Move all of your RCA cables far away from any power cables.

Next step is too triple check all earths including the one from the head unit and all amps to ground and from the battery to the bodywork. Make sure they are clean and the paint is rubbed back where they bolt to the bodywork. Make sure they are screwed in tight also check that the insulation on the signal cables isn't worn / cracked / damaged.

[TIMMMAYYY]

earth's are clean as anything well screwed down and im using 8guage wire.

[Fhrx]

Have you moved the RCA's away from the power cables?

[TIMMMAYYY]

nar i"ll do that this arvo after work and let you know whats happening.

Also, could it have anything to do with speaker wire being run across near a ground?

[Fhrx]

I've never had any issues running speaker cables near power runs.

You're using quality cables yeah?

[TIMMMAYYY]

yea well insulated cabling.

[hippy]

nah its just the old car timmay .. u need to get an r34

[Fhrx]

Heh... hippy's remedy sounds quite attractive too!

[TIMMMAYYY]

a smartarse in every crowd isn't there hippy. hehe

[Guest INASNT]

If the high pitch sound gets louder the faster you go then its the earthing on your alternator ausing the problem

[TIMMMAYYY]

the pitch increases as does hte volume only slightly 4 the volume thogh

I'll hav a look around in a few minutes.

INANST - I've never had this problem before, why would the alternator all of a sudden crack the shits?

[Guest INASNT]

cars like women are unpredictible!! Double check the alt earth, it wont take long

[AutoTrust]

Have you checked your flux capacitors? or perhaps the warp power relays? .................. Sorry about that! My missus had the same problem in her lancer and it ended up being the amp itself.I moved it back to the original position and it made no difference. i then used the amp on low pass for the sub and the noise was gone, seems to be a filtering problem in the amp. try another amp

[TIMMMAYYY]

the subs dont hav the problem its only the front speakers.

so if i lower the frequency it could possibly go away?

[AutoTrust]

Well your fronts need a high pass so they play treble only and your sub/s need low pass for bass only, so if you are running seperate amps and they are hi/lo pass selectable try swapping them to see if the problem goes away. The amps are probably different power ratings but it is just a test so lower your gains. another problem can be that your gains on your amps are too high, you should set your gains as low as poss and your head unit volume to about 90%, as a rule of thumb. I know it can be time consuming but most car audio development is.If you just lower the frequency then you will miss out on high notes and it will sound dull. good luck

[AutoTrust]

also have you run your RCA's under the steering column or under the carpet away from the cars wiring?

[TIMMMAYYY]

yea the fronts hav a high pass on them.

I run jaycar 6.5 inch carbon fibre woofers with JVC cross overs and tweeters on the dash. The amp i use for the splits is a Pioneer 4x50wrms amp (coupla models old now) but still does hte job well.

Gains are set at just on half and the frequency is set on high pass @ 70hertz or there abouts.

I could run the gains higher because im not pushin the limits of the woofers what so ever and they're very efficient.

Is it worth trying another amp to see if its a problem there?

My amps located under the front seat if anyones had any problems there before