Thread: Alternator Whine Only With Carputer

Originally Posted by 2k1Toaster

I have the same kind of alternator whine. It's pretty bad when you first start the car, then after a bit (I'm guessing after the battery has been recharged), it's not so bad. When the AC is turned on, the sound gets worse. It does not come from the speakers, definately the engine compartment.

It might just be that my alternator is incapable of outputting the required current so it is screaming "Help meeeeeee!"

Other thoughts?

wait a second, you are saying that you have a whine coming from your engine compartment and NOT from your speakers?

something else is going on here then and it's not audio related.

if you have popped your hood can you isolate where the sound is coming from?

sounds really strange IMO

btw - it looks like your avatar is taking a dump...

Originally Posted by crazy diamond

My M1-ATX is coursing me a lot of interference problems, I have tried an ATX psu with an inverter and the noise stopped altogether, I'm waiting for a replacement to see if it is a faulty M1 but I'm not getting my hopes up, might go down the lines of an inverter and throw the M1 in the bin!

strange, I'm not having a single issue, and I've had my M1 in for over a year...then again, I am running optical

Originally Posted by Red GTi VR6

wait a second, you are saying that you have a whine coming from your engine compartment and NOT from your speakers?

something else is going on here then and it's not audio related.

if you have popped your hood can you isolate where the sound is coming from?

sounds really strange IMO

It's the alternator. It sounds like it is overloaded or something. It's not extremely powerful, it is stock. Just had it replaced though because the old one took a crap. (Genuine Honda stock alternator now). It's the same kind of whine I got when (now this is before I found this site) plugged my laptop into an inverter through my cigarette lighter port. Like a squealing that increases in pitch as RPM's go up. Very annoying...

Originally Posted by Red GTi VR6

btw - it looks like your avatar is taking a dump...

It's a tail!!!!!

i also had the same case, with my first carputer, a ground loop isolator and the monster cable worked to eliminate it. now that i built my 2nd carputer, its there again, i put in a ground loop isolator combined with a power noise eliminator but still whines. i bet its the rca cable i used. i should have used monster to begin with, now its costing me twice the money and effort, im gonna order the monster 302xln about $50 5meters long. i bet this would take out the whining.

Originally Posted by Red GTi VR6

I am running optical

Ditto, Optical Rocks!!! I just started running optical in my car after I stopped getting lazy and finaly shelled out the cash to do it. Probably the best investment in my system to date. So no ground noise, no static/noise from the computers systems (i.e. mouse/touchscreen)

Originally Posted by mick0uziel

i also had the same case, with my first carputer, a ground loop isolator and the monster cable worked to eliminate it. now that i built my 2nd carputer, its there again, i put in a ground loop isolator combined with a power noise eliminator but still whines. i bet its the rca cable i used. i should have used monster to begin with, now its costing me twice the money and effort, im gonna order the monster 302xln about $50 5meters long. i bet this would take out the whining.

PLEASE let us know if it fixes it

Originally Posted by pancit175

Ditto, Optical Rocks!!! I just started running optical in my car after I stopped getting lazy and finaly shelled out the cash to do it. Probably the best investment in my system to date. So no ground noise, no static/noise from the computers systems (i.e. mouse/touchscreen)

precisely

it just never made sense to me to skimp on this stuff, because you ALWAYS end up redoing it and spending more money by tossing your crappy stuff to only replace it with what you should have bought in the first place....lol

I'm lucky that i only had to add it on to my existing setup and the fact that i get mad discount on the wires esp the optical lines

yeah - the discounts helps out a great deal....I would have these $200/each rcas without it...lol