hi all..

i seem to have a slight issue with my stereo..

ah.. there is a whine to it.. noticable when the car is on acc, then when i turn it to the on posistion, the pitch gets a little higher, then once i turn it on.. its shocking.. only started tonight.. checked all my earths.. they are nice and tight.. dont know what else it could be.. any help would be appreciated

have you an amp hooked up

yes i do

does the whine increase or change tone with acceleration

yeh.. like a alternater whine... only started tonight.. i was just tidyin up my boot.. and deceieded mount my amp onto my sub box, like the other one is.. then after that.. it started.. moved the amp back to its original possie and it still does it

I had similar sounding noise with my old car. Turned out that the Ground Earth Isolator (GEI) in the amp was stuffed, causes a whine which increases with acceleration. Good quality amps have a GEI built into them to remove interference from the elect system in your car. Cheap amps dont generly have them or they have a very cheap one which dont last to long. To fix it you need to get a GEI and fit it in line from your head unit to amp. What you do is unplug the RCA leads at the amp from the head unit, plug them into the GEI, then RCA leads from GEI to the amp. Should fix it, cost about $25

thanks mate.. however.. its not the amp... just did a test.... got some rca to 3mm leads and tested it with my mp3 player.. works fine.. which narrow it down to the HU or the RCAs..

Will most likely be the RCA's mate... Was the same story on my bro's car, and it was due to cheapy RCA's... Apparently has to do with the shielding around the cable. Go out and get some nice quality ones, even the better ones from JB Hifi are decent enough. Test em, and if there's still dramas, just take em back and maybe get the head unit checked out, if still under warranty.

And/or - make sure the ground and power wire don't come near the RCA's - try and keep them as seperate as possible. Current/voltage seem to have an effect on the RCA sheiding if kept close together. Rule of thumb i was told was when installing, run RCA's up one side under the floor, and power up the other.

I'm no car audio expert, but just speaking from experience.... I have been thru both these problems before :)

Good luck.

thanks mate.. yeh i think i have narrowed it down to one set of rcas.. the ones for the front.. i had them plugged directly from my ipod, back to the amp, and they still whine.. so ill p*** them off tomorrow, and get sum new ones.. might get 3 sets while im at it.. make sure this doesnt happen again.. if its not them.. well, i guess its time for a new HU

Also try turning your gains down abit.

I'm not sure even where you can get monster cable for a car but look into it as he home theatre ones are GREAT

hmm.. well after gettin new rcas and doing some rewiring.. i still have the problem.. i did a bit of a search on here and found that it can occur due to the earth fuse in the HU blowing.. only seems to happen with pioneer.. now, i have the headunit apart.. and soldering iron ready.. just cant find the internal gnd fuse.. there are a few things that say gnd... does n e one know where it is.. or what a blown one would look like?

hmm.. well after gettin new rcas and doing some rewiring.. i still have the problem.. i did a bit of a search on here and found that it can occur due to the earth fuse in the HU blowing.. only seems to happen with pioneer.. now, i have the headunit apart.. and soldering iron ready.. just cant find the internal gnd fuse.. there are a few things that say gnd... does n e one know where it is.. or what a blown one would look like?

Yeh, was just about to tell you. If its a pioneer then thats what your problem is.

Sorry, i have nfi about the internals of it.

I haven't seen any photos or anything, but apparently it's a pretty complicated job to fix the fuse - you need pretty good soldering skills in order to do it.

If your headunit's still under warranty, Pioneer could probably fix it for you. My fuse nearly went (was very close to being completely stuffed apparently), so I sent it back to Pioneer..... apparently they'll fix it for free under warranty first time around, but after that, you've got to pay.

I got my headunit fixed for free, and learnt my lesson - if I had a ground disconnected when upgrading/completing my stereo, the battery was disconnected too :)

thanks guys.. deceided not to screw round with it... im just gunna go look at another HU n e way..

I had/have a reoccuring problem with this after each time I play with my stereo.

Usually it's the RCA's being too close to the transformer / power pack for my eclipse headunit!

I had/have a reoccuring problem with this after each time I play with my stereo.

Usually it's the RCA's being too close to the transformer / power pack for my eclipse headunit!

i see.. nah, cant be it.. i didint stuff around with the headunit and the rcas at the back of it.. musta touched sumthin with power when i had them unplugged from the amp.. oh, does n e one know where u get one of those grounding kits from.. that might just save me from buyin a new HU

well, i now have another issue.. my new mtx amp started smoking yesterday.. from just beside the speaker teminals.. no idea why.. evrything was connected properly.. im gunna take it to where i bought it from when i get back from my little trip.. but does anyone have any ideas why this would happen.. the amp still turned on without the sub plugged in.. i have taken it out now though.