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 Amplifier ground points.

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billfrank85
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PostSubject: Amplifier ground points.   Fri Nov 21, 2014 1:23 pm

Hi all, in a few weeks/months I will probably start working on upgrading my sound system. Too far out to really nail down what kind of equipment I want. I won't be running a sub, but rather a 4 channel amp and 4 speakers. From the looks of it, amp installs are fairly easy on this car since the battery is underneath the rear seat. I'm guessing the easiest way to do this is to install the amp in the trunk and run the power cable straight to the battery, going underneath the seat/seatback? I will be running all new speaker wire as well...but the one thing I'm not 100% sure on, is the ground point for the amp. I am wondering what everyone uses to ground their amps if installed in the trunk? A pic of the location would be most appreciated as well if it is in an obscure spot! lol

Thanks!
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Abaddon
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PostSubject: Re: Amplifier ground points.   Fri Nov 21, 2014 1:47 pm

I have my Amp grounded under the rear seat. If you pull the seat out, you'll see that there's ALLLLLL kinds of bolts to ground to. The bonus to it is that they're all near the battery and in clean, thick metal. I believe mine is actually connected with the battery's chassis ground point.
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matt270avian
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PostSubject: Re: Amplifier ground points.   Fri Nov 21, 2014 3:32 pm

Like Abaddon said there are plenty of places to ground under the back seat. Mine is grounded on a large bolt on the drivers side IIRC. Both power and ground can then be run under the top half of the back seat into the trunk.
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AA
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PostSubject: Re: Amplifier ground points.   Sat Nov 22, 2014 11:39 am

When my system was installed, I grounded components direct to the battery via a distribution block, similar to the way the power wires are connected. I was told noise could be a problem, but I didn't notice any. It's a bigger cost for wiring, but I liked the way it presented.

Functionally, I don't think it makes a difference as long as you choose solid connections to the chassis. Be sure to scrape away paint where the connector mates up. Use star (crush) washers to get a good bite. But with the battery just a couple feet away, I opted for grounding direct.

The old wiring set-up:



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matt270avian
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PostSubject: Re: Amplifier ground points.   Sat Nov 22, 2014 3:41 pm

AA, did you ever finish your new setup?
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AA
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PostSubject: Re: Amplifier ground points.   Sat Nov 22, 2014 3:51 pm

Nope. Got a little work done, then put on the back burner. Reinstalled the trunk liner, so it's like stock until I can get back on it.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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http://www.cardomain.com/ride/657082/4
 
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