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i know that running the power wire and the RCA wires beside eachother i not good

thats that have that same affect when running the speaker wire from an amp to a speaker beside the power wires?

 
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technically yes. but not so much that you'll notice.

 
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good, cause they pass eachother at one point

 
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i still have an irritating alternator whine though
i cant figure out why, i even bought those rip off 30$ RCA wires

 
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how many watts is your amp?

If you are over 1000 watts and your lights blink when you bump your system, it may be a good idea to buy a capacitor. Your alternator whines because your belt slips.

 
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speaker wire and power wire could hang out together all day, and youd NEVER whine at all... its all relative to voltage levels.

the reason your rca's pick up the noise is because its such a low level signal that even if it says 4v out, it usually just hangs out around 1-2 volts unles syoure playing test tones, but speaker outputs put out way more voltage
p = power, v = voltage, r = resistance

P = V^2 / R
v^2 = PR

20 watts (peak) x 4 ohms = V^2

sqrt of 80 = ~9, so a ~9 volt output = 20 watts peak, x .707, 14 watts rms = 9 volts at 4 ohms
so at low power levels, the relative voltage over it is still quite high

so if youve got 2 volts of signal, and a noise that gets is, we could say the noise is possibly at .5 volts (not an exact number)

but that compared with 9 volts (14 rms) is a much different one, which is why, yes, it might make the noise, but, youll never hear it

this here also explains why higher voltage headunits can rid out outside noise.


let me know if anyone needs clarification

 
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(taking off smart guy glasses) hmmnnnn. I concur with your intricate yet provacative statement. If you need me I'll be in my office trying to figure out WHAT THE HELL THAT MEANS.

 
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because theres more power goin through a speaker wire, no, youll never notice any noise through speaker wires from power wire

 
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all right try this...

if you look at the output specs on a head unit, they say the output has a certain resistance (around 80 ohms i believe). your speaker has an impedence of about 4ohms usually.

SOOOOOO... if you gave them the same voltage, the noise would be around 20 times more noticable on the RCA's, since they are low current.

BUTTTTTT... your door speaker actually can get much higher voltages, maybe 2-10 times the voltage of your RCA's.

20*(between 2 and 10) = 40-200 times the noise in the RCA's than the speakers

that's why the speakers don't matter. hope that helps

 
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well that defenatly clears up that problem

but i still have the annoying whineing sound, any possible reasons?
everything seems to be grounded very well on solid connections with those rip off gold plated terminal rings. i put high quality speaker wire, power wires, ground wires and RCA wires.

oh yeh, i have a jbl 300.1 and a RF 201s, so total i have about 500rms at almost full power

so, anyone other reasons for whine

so? anyone?

 
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have you regrounded the headunit?

try moving around the wires behind your HU too.

also, where does your RCA wire run? if under the steering wheel you're possibly getting interference from the fuse box.

whine can be a real pain. good luck.

 
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what do u mean regrounded, like instead of soldering it to the black wire, just grounding it to the frame or piece of metal?
does that actually make a difference?

the RCA wires run under the centre concole, under the backseat carpets, and up the left side of the back seat into the trunk.
the power wire runs along the right side all the way.