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thanx for info, however i tried all of these solutions and it didn't work.
Heres what i did to fix the problem: at first i checked all connections for any loosen connectons then i tighten ones that weren't tightly connected, then i regrounded my HU with 10 Guage wire, also i grounded the hU itself, then i tested the hu in my car with different speakers, since the distortion was still there even on differ speakers i thought there's something wrongwith the HU, i went to the dealer they tested and it seemed to be ok, but the dealer just in case exchanged the Hu for new one, but when i pluged new Hu the distortion was still there, so i turned off all enhacement programs such as bbe,dts ext. then i turned all treble and bass settings to standars witch is "0" in this case, but the distortion is still there nometter if it'splayed loud or not.

my system doesn't include an amp, the hu is directly connected to the speakers, would amp help or would it just amplify the distortion with the sound?
also i didn't use stock wireing since the car had it's own volkswagen audio system, with it's own cable input, so i rewired the car with my own speaker wires.

You have to be missing something because it doesnt add up.

You skipped the stock wiring...
You have a Brand NEW head unit...
You have used a new ground...
Tested with other speakers same result...

The only other thing I can think of is maybe pinched/shorted speaker wire somewhere...

no I actually meant either.
he was talking about not having a head unit with sub outputs and wanting a way to control crossover points for subs and components.
he wants a head unit with a crossover and 3 sets of pre-outs, or he wants a separate unit like an XM3.

on the EQ issue, yes it's generally a fix solution.. not something you want to look for a way to work into a system just to have it. any time you add things to the signal path, you're going to degrade the signal to an extent by coloring the original source material.
again, that's why you want to keep things as simple as you can.

Ohhhh I see, guess I should read more next time.

Darthness wrote:Well my case is: my deck doesn't have subwoofer controls or eq for front and rear. the subamp's rca's are running from the rear output on the deck. The sub is getting half its rms, so i use a fair bit of eq on it (high on mid, sla on 1 or 2, eq on low & m id on 4). With the volume turned up to around 25-35, on some songs and at certain times the fronts will distort on bass notes... with it down below 25, its nto as loud as i'd like it to be, especially the sub.

So basically im buying a pioneer deh 560MP (i think). It should allow me to control the eq for the fronts and sub, which is what i need! Being able to turn the eq for lows to 0 up front and 2 or 3 for mids should correct my problems :)

and make me a happy camper.

not sure what exactly this means but i'm pretty sure kiki said something alon gthe lines of what i did:
distortion can be caused by turning the colume up too high (the amp in a head unit isn't made to run at full volume without distortion) or it can be caused by the lack of a proper high pass filter to prevent the speakers from bottoming out.

Well i turned all settings on hu to standard or to low, but this didn't help, i suspect the wires may be damaged.

Check your speaker wires.. Take a seperate wire run it directly from the head unit to your speakers, don't even mess around with runing it through the doors,etc.. just connect the two and see how it sounds..

Sounds like a wire problem somewheres...

no problem. I ran both answers together.. it was confusing

dmeyer07 wrote:Check your speaker wires.. Take a seperate wire run it directly from the head unit to your speakers, don't even mess around with runing it through the doors,etc.. just connect the two and see how it sounds..

Sounds like a wire problem somewheres...

well i did that but with wider wire and the distortion was still there, however i discovered that there's more bass and the sound was clearlier, the treble didn't change much, but there was a slight difference in clarity.