AMP Ground to Battery?
05-09-2004, 04:56 PM
#11
This is a bit of a sticky topic on many boards. Some will argue that your ground will have more chance to introduce noise into your system and have a greater resistance when you use a cable from the batteries negitive terminal as the ground. I have done this type of install on a few cars and am planning on not chassis grounding in my own car. Im my case there are no decent chassis ground close enough to the amps so my choice was easy.
If you have the cable already, go for it. But pick one or the other. Dont run negitive cables from the battery and chassis ground. You would just be waisting your money.
If you have the cable already, go for it. But pick one or the other. Dont run negitive cables from the battery and chassis ground. You would just be waisting your money.
05-09-2004, 10:11 PM
#14
Guest
Posts: n/a
Manville Smith at JL Audio did some testing to find similar results with respect to the chassis being equivalent to a 4awg conductor. So, now we fire up the cars computer, the ignition, fuel pump (there's 10A), the lights, the blower motor and maybe the windshield wipers or the rear defroster. How much of that equivalent 4awg is left for you 1,000W amp?
Just run the wire the way the USACi rule book says.
Just run the wire the way the USACi rule book says.
05-10-2004, 01:58 PM
#16
Guest
Posts: n/a
I would guess that the frame of my vehicle is probably about the equibvalent of a few runs of 4/0 gauge.
It's definitely at least 1/0 gauge considering it has about 15x the surface area (excluding, of course, the run from the frame to the battery which should be upgraded anyways).
By the way, I have a bunch of swampland I am selling ... anyone interested?
It's definitely at least 1/0 gauge considering it has about 15x the surface area (excluding, of course, the run from the frame to the battery which should be upgraded anyways).
By the way, I have a bunch of swampland I am selling ... anyone interested?
05-10-2004, 02:02 PM
#17
500 Watt CAFz'r
Join Date: Sep 2000
Posts: 909
Gotta say I am with Dave and the others on this one. Everyone that I know that has spent the money and time on running a dedicated ground for they're amps has gained a couple tenths SPL wise. That says to me that teh amps needed more power and couldn't get it trough the chassis.
05-10-2004, 04:09 PM
#18
I'll take your swampland and the extra dollars from the customer that Johnvroom sends away and use those dollars to develop the swampland into Casa Forbidden with a view and sell off the extra lots to people like Dave and Dave (Defro) cheap. Any takers? Electricity is an algebra equation, what you do to one side you have to do to another.
In most of todays vehicles that are a combination of recycled coke cans, glued together unibody panels and crappy weld joints, the chassis return in most vehicles is sky high in resistance as compared to running a ground direct to a battery. It is not about the size or amount of the metal in the frame or body panels, it is about the resistance in them or through them joined together. Learn it, teach it and do it right the first time.
In most of todays vehicles that are a combination of recycled coke cans, glued together unibody panels and crappy weld joints, the chassis return in most vehicles is sky high in resistance as compared to running a ground direct to a battery. It is not about the size or amount of the metal in the frame or body panels, it is about the resistance in them or through them joined together. Learn it, teach it and do it right the first time.
05-10-2004, 05:47 PM
#19
0 Watt CAFz'r
Thread Starter
Join Date: May 2004
Posts: 35
Ok so I take it there are a few opinions on this subject....
I do actually have enough 0/1 ga to go both ways. Next question can the power and ground be run side by side?
Or should they be separated?
Thanks again
I do actually have enough 0/1 ga to go both ways. Next question can the power and ground be run side by side?
Or should they be separated?
Thanks again
05-10-2004, 05:59 PM
#20
Originally posted by MR2NR:
I'll take your swampland and the extra dollars from the customer that Johnvroom sends away and use those dollars to develop the swampland into Casa Forbidden with a view and sell off the extra lots to people like Dave and Dave (Defro) cheap. Any takers? Electricity is an algebra equation, what you do to one side you have to do to another.
In most of todays vehicles that are a combination of recycled coke cans, glued together unibody panels and crappy weld joints, the chassis return in most vehicles is sky high in resistance as compared to running a ground direct to a battery. It is not about the size or amount of the metal in the frame or body panels, it is about the resistance in them or through them joined together. Learn it, teach it and do it right the first time.
I'll take your swampland and the extra dollars from the customer that Johnvroom sends away and use those dollars to develop the swampland into Casa Forbidden with a view and sell off the extra lots to people like Dave and Dave (Defro) cheap. Any takers? Electricity is an algebra equation, what you do to one side you have to do to another.
In most of todays vehicles that are a combination of recycled coke cans, glued together unibody panels and crappy weld joints, the chassis return in most vehicles is sky high in resistance as compared to running a ground direct to a battery. It is not about the size or amount of the metal in the frame or body panels, it is about the resistance in them or through them joined together. Learn it, teach it and do it right the first time.
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