is this a serious problem?

[zackmac]

hey guys and gals

recently, while I drive my 03 p5, (5spd), there is sometimes, but not always, a hissing/whining sound that is pretty loud. It starts at a cold start or tunes in after a day of not heating it while I am cruising..
I can't quite tell where the sound is coming from but its sound output comes in accordance with RPM's. it gets whinier and higher pitch as i accelerate and is flat at idle.

Also, i have blown out 7, yes that is SEVEN, pairs of head lights in the past 4 months. They are only ~$15 per pair of low beam bulbs so it is not killing me, but this should not happen. My headlights dim all the time and surge with RPM's...
When I have the wipers and air on my headlights dim upon shifting with accordance to the RPM's.. i noticed also when I started my car and was parked, i pressed all 4 window buttons at the same time to go up or down and my RPM's drop to about 500-600 as soon as i press them and all interior/exterior lights dim massively.

i have a 1000w sound system in my car , could i have friend my ECU? i desperately need to know a fix to this problem, any input is appreciated.
(Oh and also, these sypmtoms happen more when I am playing music, but THEY STILL DO REGULARLY HAPPEN EVEN WHEN MY STEREO IS COMPLETELY OFF.)

Thanks so much

 

[The ManLaw]

how do you have your amp wired...RCA's near the power lines? that's what it sounds like to me, and yes, if I remember right, when I made that mistake it did it with the radio off also

 

[zackmac]

I think it is the alternator that is damaged. something to do with voltage regulator...

 

[P-Funk!]

^x2 - have the alternator checked out. Check body-to bat grounds as well.

 

[zackmac]

What would be a good high-output alternator to get?

 

[azuelke]

My RPMs dip as well when I have a strain on the electrical system. I know my battery is on its way out, but I'm sure the alternator isn't in the best of shape either.