One more extra bat ?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=76102
Printed Date: May 24, 2024 at 7:02 PM

Topic: One more extra bat ?

Posted By: Ravendarat
Subject: One more extra bat ?
Date Posted: April 11, 2006 at 10:05 PM

When you guys do systems with multi batteries, do you run the ground from the batteries in the trunk to the bat under the hood. Im doing this in my swift which is unibody and has poor ground locations in the back to start with. Any Insight here?

-------------
double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

Replies:

Posted By: jeffchilcott
Date Posted: April 12, 2006 at 1:13 AM

if you cannot get a good dround in the back then by all means go back to the batter in the front. I have found typically in uni-body cars where you cannt get good ground to the sheet metal I go to the frame pieces in the rear of the car. I dont know if that will work for you but worth a try

-------------
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place

Posted By: forbidden
Date Posted: April 12, 2006 at 1:35 AM

Agree, if you cannot find a good ground in the rear, run it up front. You can pretend your a SPL guy.....

-------------
Top Secret, I can tell you but then my wife will kill me.

Posted By: Ravendarat
Date Posted: April 12, 2006 at 1:45 AM

I use to could do spl. I just cant find enough space for 4 12's and still keep my cd changer, vcr, sat radio, md deck, DVD, 7 inch screen, 15 inch screen, N64 and Playstation2. So 3 12's had to go ;)

-------------
double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

Posted By: jeffchilcott
Date Posted: April 12, 2006 at 3:45 AM

Ravendarat wrote:

I use to could do spl. I just cant find enough space for 4 12's and still keep my cd changer, vcr, sat radio, md deck, DVD, 7 inch screen, 15 inch screen, N64 and Playstation2. So 3 12's had to go ;)

get creative, i managed to fit (8) 12's in a ford festiva...hehe I will have to dig up the pics, it was loud untill the rust started giving way, then it as all over.

-------------
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place

Posted By: MrSector9
Date Posted: April 12, 2006 at 2:26 PM

i definatly want to see pics of that :)

I am sure you should be able to get a good enoug ground at the back, just ground it and then measure the resistance from the front battery ground terminal to the rear battery ground terminal.

Posted By: jeffchilcott
Date Posted: April 12, 2006 at 2:33 PM

here is one of the pics from the festiva....this was with the frame work done, the 2nd layer to the wall was not added or any reinforcements to the inside of the wall. there are 2 seperate chambers each one was a bit shy of 10 cu ft for 4 subs with 190sq in of port if I remember right.

posted_image

-------------
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place

Posted By: jeffchilcott
Date Posted: April 12, 2006 at 2:43 PM

while im at it here is the box and car that we did 153.1 in last month....it confuses alto fo people, there is alot more indepth thinkng then it looks like..

That is my girlfriedn she ran the car last year, she took 3 first places that weekend. 2 at our regional event and 1 the day before at a double point event.
she went on to place 2nd at USACi world finals in her class 301-900 Basic stock

posted_image

(2) 12' L7's at that time 2000 watts of rated power

Now (2) 12' L7's 2400 rated power. 3387watts actual clamped power......Yes that was via a fluke clamp and dmm both set to average!!!!!! So RMS!

It's loud!

-------------
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place