A few more questions before i finish my install. - Audio & Electronics Forum

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A few more questions before i finish my install.
Sunday, July 18, 2010 9:34 PM
1. My subs should be getting around 800w each wired a 2 ohms. I am going to use 10 awg wire but its only 7 strands. Will 7 strand 10 awg wire be alright to wire my subs up. (and yes, thats the speaker wire, not my amp power wire)

2. does it matter what side my trunk battery is on (weight wise)? I will proably downgrade to 1 sub after a while so I thought maybe it would be better to have all the weight on the passanger side to ballance out better, or is it unnoticeable?

3. If i put my battery on the passanger side, will the wheel well be a good grounding point? (sanded down of course)

Thanks guys.

Re: A few more questions before i finish my install.
Monday, July 19, 2010 3:24 AM
1. strand count is just flexibility.
2. it's under 100 pounds, not going to matter
3. that's fine.


Weebel wrote:Im to smart to go to strip clubs.

Re: A few more questions before i finish my install.
Monday, July 19, 2010 5:30 AM
Thanks alot Lanman.
Re: A few more questions before i finish my install.
Monday, July 19, 2010 4:56 PM
Sean I personally like using the spare tire well as it is easy to hide under the carpet and its easier to get bolt and a couple of washers with a lock nut on so it seals up nice and tight and has a good ground point and doesn't vibrate loose.

I know a lot of guys that spend hours trying to chase down ground points.




Whats up people?
Re: A few more questions before i finish my install.
Monday, July 19, 2010 10:15 PM
But then it leaves a lump under the carpet. haha. I like the Idea but there is a little ledge thing beside the tire well in the back there that ill ground on. It only took me about 30 seconds to get the paint off with a wire brush and drill. And my dads got all the drill bits, nuts and bolts for it to be easy enough.

I'm also trying to buy as minimal wire as possible. That ground by the wheel well needs less then a a foot of wire.
Re: A few more questions before i finish my install.
Tuesday, July 20, 2010 3:42 PM
spare tire holder is a crappy ground


Weebel wrote:Im to smart to go to strip clubs.

Re: A few more questions before i finish my install.
Tuesday, July 20, 2010 8:54 PM
also, is it crucial that my amp fuse is within 18 inches of the battery? Because it would save me a lot of trouble and some money if it could be say...30 inches away... Just wondering.
Re: A few more questions before i finish my install.
Wednesday, July 21, 2010 5:30 AM
Closer the better is imperative.


Weebel wrote:Im to smart to go to strip clubs.

Re: A few more questions before i finish my install.
Wednesday, July 21, 2010 8:21 AM
Lanman - why do you say that?


Sean the reason you have a fuse is so the car doesn't burn down. the closer it is to the battery the less likely it is going to get punctured or cut or you have a short between the battery and fuse. I typically have mine less than 10 inches and most of the time use 3M tape and stick it to the side of the battery (most cars i am working aren't show cars).


Whats up people?
Re: A few more questions before i finish my install.
Wednesday, July 21, 2010 3:21 PM
This guy is not a fan of locknuts on grounds. Anytime Ive used them it caused a poor ground and sparking at times.



Re: A few more questions before i finish my install.
Wednesday, July 21, 2010 4:39 PM
Really? I have never has an issue with the locknuts on a ground . . . however a dab of the right strength loctite could also help instead


Whats up people?

Re: A few more questions before i finish my install.
Thursday, July 22, 2010 4:03 AM
Shorter distance to fuse for a few reasons - first is it'll blow faster. It won't have the resistance of the wire, even though it may be tiny, to delay the tripping of the fuse. You always wanna fuse close to the power source incase of a short so it kills everything down the line. Why do you think it goes from pole to meter to weatherhead to breaker box in a home?


Weebel wrote:Im to smart to go to strip clubs.

Re: A few more questions before i finish my install.
Thursday, July 22, 2010 12:32 PM
alright, thanks guys.
Re: A few more questions before i finish my install.
Friday, July 23, 2010 12:39 PM
the higher the strand count the better, it has less resistance, and carry more current

Most people think current flows "through" a wire but thats not true. Current flows "around" the wire on the outside. The more surface area a cable has the more it can carry but at the same time more surface area will dissipate more heat. Cable heat is usually not a problem unless your connections aren't any good or your just pulling too many amps in the first place



Re: A few more questions before i finish my install.
Friday, July 23, 2010 3:33 PM
sweetnloud wrote:the higher the strand count the better, it has less resistance, and carry more current

Most people think current flows "through" a wire but thats not true. Current flows "around" the wire on the outside. The more surface area a cable has the more it can carry but at the same time more surface area will dissipate more heat. Cable heat is usually not a problem unless your connections aren't any good or your just pulling too many amps in the first place


Not true. The skin effect only effects high voltage AC current. As the voltage increases the electrons tend to force themselves to the outside of the wire. I did my science fair project on this.

High strand count had the same voltage at the end of a 25 ft run as solid wire did.

Now lets say your had a ton of power going from your amp to the sub, a higher strand count would be useful since that is an AC signal.



Re: A few more questions before i finish my install.
Saturday, July 24, 2010 12:47 PM
hes talking about from the amp to the subs and like you said its ac volts, so yes it is true. also like i said the higher count will effect the resistance. any little thing will help with box raise to keep the final ohm load down. since you did a "science fair project" on this you should know it deals with frequency not volt, the higher the frequency the more it effects it





Re: A few more questions before i finish my install.
Saturday, July 24, 2010 1:16 PM
sweetnloud wrote:hes talking about from the amp to the subs and like you said its ac volts, so yes it is true. also like i said the higher count will effect the resistance. any little thing will help with box raise to keep the final ohm load down. since you did a "science fair project" on this you should know it deals with frequency not volt, the higher the frequency the more it effects it


Reading > me. I apologize.

I was forced to do a science fair project so I picked something I was interested in.



Re: A few more questions before i finish my install.
Saturday, July 24, 2010 11:02 PM
ummm, well. It doesnt sound to serious so I think i'll just stick with the wire i have. And on this note. Can I drill a hole for a new bolt and grounding point bewteen the seatbelts or right above them. (where is starts to curve upwards? Will I hit anything important underneath? (half inch under metal)
Re: A few more questions before i finish my install.
Sunday, July 25, 2010 10:06 PM
that an alright place to drill a hole and ground. Dont mean to be annoying but i have a chance tomorrow to get it done so i want to know.

thanks guys and sorry.
Re: A few more questions before i finish my install.
Monday, July 26, 2010 8:27 AM
Your gas tank is right behind there.


Weebel wrote:Im to smart to go to strip clubs.

Re: A few more questions before i finish my install.
Monday, July 26, 2010 7:36 PM
thats not good. even directly above the seat belt bolt?

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