Audio issues

[cherrington17]

got my cables.... just a matter of needing time off to get them in and try it. hmm... i'll update this post when i have more info.

[Ryan from Ohio]

Looks good eh?

[cherrington17]

yeah, very slick looking wires. most of the wire ends where loose, but luckily they are just screw on.

got any recommendations for how/where to hide these? considering ONE pair of these rcas is the size of all 3 pairs of my olds ones.

[Ryan from Ohio]

take the trim up around the doors, pulle the carpet all the way back and toss it in there.

I have a few sets running front to back, but mine go down the middle

[cherrington17]

i'm thinking i'll have to go down the center next to the passanger seat. looping it under all those cables for the various "power" features that run down under the trim makes it too much hassel.

how did you manage to fish it under the center carpet?

[Ryan from Ohio]

Seats and center console out of the car. lift the carpet up.


http://caraudiocentral.net/ryan/images/alero/instl1.jpg
http://caraudiocentral.net/ryan/images/alero/instl2.jpg
http://caraudiocentral.net/ryan/images/alero/instl5.jpg
http://caraudiocentral.net/ryan/images/alero/instl6.jpg

[cherrington17]

yyyyeeeaaahh... doubt i'll be able to do that. this is my daily driver and i only have like 3/4 of a day off to get the job done.

guh. i'll figure something out.

[cherrington17]

alright, got the wires in and the hum is virtually gone. (little hiss coming through the speakers, but they have about 100W going to them so i'm going to assume thats normal. (can be heard with the radio volume at 0 )


now the problem is, the alt whine is still there(and with some authority). so does this mean its a headunit issue, or should i upgrade all my grounding wires?? it did it before with both amps, so (as much as i'd love to get a new 400W amp with soft turn off) that one is eliminated.

also, i read on a different site, that if you move your grounds closer together, it might cut down on it...? so should i run a wire from where my main ground is upfront, to the back?

[Ryan from Ohio]

www.bcae1.com

#95

Your best bet is to try regrounding the head unit. If the problem spans all amps, its the source.

[cherrington17]

so move the ground for the headunit back to where the amps are grounded?

[Ryan from Ohio]

No.

You probably have it run right into the wiring harness ground? If so unhook that and find you own ground.

[cherrington17]

i have the wire harness (for the chimes and whatnot) grounded in one place and the h.u grounded in the same block, but separately.

i can just move the main wire that grounds that whole block, back to where the amps are....

[cherrington17]

update #...whatever

i temp moved the ground to the back of the car, and the whine is still there.

also added one extra wire from chassis to battery (-). i'll be doing the tranny one tomorrow... and any others i might find.

and other things i need to check, should be...?

rca shield to metal ground around the headunit, to see if thats actually grounded. (if not, i suppose i can open it up and see if i can fix it)

if not.. whats a good headunit that can control an ipod? i have pioneer right now, but i can't say i like the looks of any of their current models...

[Ryan from Ohio]

Heya boss, you should of tried grounding the headunit up front, to a different location. Thats what Ive been telling you.

Running a line all the way to the back is silly. Whoever suggested that is giving you bad advice. You probably used small gage wire and it probably hurt you more than anything. Since power flows from the body to the unit and returns through the + side...

[cherrington17]

it wasn't a permanent job, and i used some scrap 8ga i had laying around, as a test. (and i know enough about wiring to know not to use a small gauge over a long distance. sheesh, gimme some credit. )

i get to tear things apart and play around more tomorrow, so i'll try another solid location. (just gotta find a decent one) the thing i don't really understand is, after i set it up, it worked fine for about 2 weeks, then outta the blue i get a ground loop problem. wtf is with that? if it was a ground problem, shouldn't i have had it from the start??

[Ryan from Ohio]

ya, thats why Im figuring its the head.

[cherrington17]

F* F* F*. the rca's on my head, aren't grounded to the shield around the radio. somehow 3 of them are grounded w/ the inside pin, but not their shield.

so i guess that explains it.

Thanks for all the help ryan. you've been pretty tolerant to deal with my 8000 questions.