Kickpanel ?

[helotaxi 5,000+ posts]

Induced noise is not a large problem in car audio despite the prevailing myths and the marketing hype of the cable manufactures. You can definitely run the speaker wire and RCAs together.

 

[squeak9798 5,000+ posts]

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At one point in time I had two sets of speaker wires, two pair of RCA's, 4ga power wire and the REM wire all zip tied together for the entire length of my family sized 4-door sedan....and had absolutely zero noise issues.

 

[Insomniac119 10+ year member]

Last question I hope... would I be alright if I ran speaker wire down the same side of the car that I have the RCA cables, or do you think it would accumulate noise?

That's what I always do and never had any problems. You're just not suppost to run any signal wires along the power wires.

 

[helotaxi 5,000+ posts]

You're just not suppost to run any signal wires along the power wires.

This is a car audio myth that has no science to back it up.

 

[96civ 10+ year member]

This is a car audio myth that has no science to back it up.

Couldn't the electric fields created by the current possibly interfere with the signal? I mean that's scientific evidence that it could, but I'm not saying it interferes MUCH just some. And thanks for the speedy reply. I should be getting my Profile AP1000 amplifier tomorrow so we'll see how it sounds at where I've aimed the speakers.

 

[helotaxi 5,000+ posts]

For there to be interference, there would have to be a fluctuating current going through the power wire (AC). Since the power in your car is DC there is not a problem. Also consider that if you use a chassis ground for your amps, your chassis is now a power wire. Don't have to separate the signal wire from the chassis do you?

 

[96civ 10+ year member]

For there to be interference, there would have to be a fluctuating current going through the power wire (AC).

You still get electric fields from DC, but does it absolutely have to fluctuate direction back and forth in order to create noise?

Also consider that if you use a chassis ground for your amps, your chassis is now a power wire. Don't have to separate the signal wire from the chassis do you?

No, but a ground is attached to the car because the car has 0 potential difference so that when you attach it to a lead filled with electrons, you get current. Therefore shouldn't the car be able to move the electrons from a power source attached to it to the ground very quickly -- so that the car itself does not become charged?

 

[helotaxi 5,000+ posts]

You still get electric fields from DC, but does it absolutely have to fluctuate direction back and forth in order to create noise?

A static mag field will not cause noise. Noise is induced current in the signal line. To induce current it has to fluctuate. If it didn't you could induce current in a wire by placing a magnet next to it and you would be able to make free power.

No, but a ground is attached to the car because the car has 0 potential difference so that when you attach it to a lead filled with electrons, you get current. Therefore shouldn't the car be able to move the electrons from a power source attached to it to the ground very quickly -- so that the car itself does not become charged?

The chassis does not have zero potential though. It has resistance and therefore has potential. The only point of zero potential is the negative battery post. All current has to flow there. The chassis is nothing more than a conductor, and not a very good one for that matter.

 

[96civ 10+ year member]

I rest my case in that you know a lot more about this than I do helotaxi and having me babbling on about this further would lead to nothing since you're most likely correct lol. I have gotten the amp installed, power, ground, remote, rca, and ran speaker wires down one side (need more wire for the other side)... now all I have to do is hook up the speaker wire to the crossover to the amp and see how they sound. If this alignment doesn't work (approx. middle head rest) I'm going to try the rear of the head-unit. We'll see how everything gooesss.

 

[96civ 10+ year member]

A lot of people actually start by aiming the speakers at the rear of the headunit, where the speakers are essentially firing straight across the car at each other. Reason for this is that each speaker will be more equally off axis to both listeners, thus creating better frequency response and equalizing intensity differences from both speakers at the listening position.

I tried a few different alignments for the components, and this is the one that I found to provide the most realistic stage. Anywhere else I found that either the stage wouldn't be as wide or the highs became to harsh. Sounds pretty darn good now if I do say so.