New System, Lights Dim, Why? - Chevy Impala SS Forum
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post #1 of 20 (permalink) Old 02-02-2004, 10:18 PM
PEZOHOLIC
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Hi,

Just got my new system in, Two Infinity 12" 1230w subs in a sealed enclosure. My pheonix gold ZX500 amp pushing [email protected] RMS. 4Ga wiring, 8GA ground (should I use 4ga?)

When I come to a stand still while in drive I have to turn down the system because the lights and everything electrical dims. I can watch my Volt Guage going back and forth.

Would this be a weak battery? I have WAY to small a battery right now. It is the DT3 from walmart, lowest rated battery for our cars. They wont let me return it and upgrade without it being dead...how do I kill a battery?

Lol if it is my battery that is [img]smile.gif[/img]

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post #2 of 20 (permalink) Old 02-02-2004, 10:30 PM
college slacker
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Wait wait wait wait wait..... you're running that kind of system power without even a cap, and you're wondering why your lights dim at LOW RPM (when the alternator is at the lowest rotational speed)? The battery is a big factor, too. You may want to think about getting a gel-cell battery or even a 200 amp alternator.
post #3 of 20 (permalink) Old 02-03-2004, 12:32 PM
chydog's SS
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you definitely need to put your ground wire to 4 gauge, i would suggest a 1 farad cap and a battery upgrade - if it persists your alternator is probably giving up the ghost - just my opinion I run a rockford six channel 360.6 (birthsheet 702 watts) two image dynamics 12 id 12's, image dynamics chameleon components(6 1/2") as well as stock rear fill speakers - no dimming ever, been in place since 1999 - no problems
 
post #4 of 20 (permalink) Old 02-03-2004, 01:28 PM
azroadmonster
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Quote:
Originally posted by Joe Malczewski:
Hi,

Just got my new system in, Two Infinity 12" 1230w subs in a sealed enclosure. My pheonix gold ZX500 amp pushing [email protected] RMS. 4Ga wiring, 8GA ground (should I use 4ga?)

When I come to a stand still while in drive I have to turn down the system because the lights and everything electrical dims. I can watch my Volt Guage going back and forth.

Would this be a weak battery? I have WAY to small a battery right now. It is the DT3 from walmart, lowest rated battery for our cars. They wont let me return it and upgrade without it being dead...how do I kill a battery?

Lol if it is my battery that is [img]smile.gif[/img]

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4Ga. power is a little small for the amount of juice that amp can pull
post #5 of 20 (permalink) Old 02-03-2004, 03:41 PM
bbodyguy
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Not a big fan of caps, thicker wire is a better fix, and upgrade the alt wire also.

Peter
post #6 of 20 (permalink) Old 02-03-2004, 06:21 PM
PEZOHOLIC
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Ok


I know I don't need a cap.

However I will upgrade the ground.


How do I kill a battery? Then I can get the 1000watt CCA battery.

What wire from te alternator do I need to upgrade? Any other post that has the procedure?

Thanks guys
Joe
post #7 of 20 (permalink) Old 02-03-2004, 10:46 PM
ophidia31
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Quote:
Originally posted by Joe Malczewski:
Ok


I know I don't need a cap.

However I will upgrade the ground.


How do I kill a battery? Then I can get the 1000watt CCA battery.

What wire from te alternator do I need to upgrade? Any other post that has the procedure?

Thanks guys
Joe
there should only be on wire running from the alternator aside from the actual plug. upgrade that to about 4gauge. it should look like 10-8gauge stock. also get an optima yellow top battery. put one in and have had zero problems and what little my stereo did dim my lights, with 3 amps and prior to the optima, was gone afterwards. try the battery since its cheaper than the alternator and if that doesnt work then id try upgrading all the wires running back. probably to 2-0 gauge. can never be too big. [img]smile.gif[/img] and if your still having problems then get a larger alternator. all in all, with all this done youll have a bullet proof power system for your stereo.
post #8 of 20 (permalink) Old 02-04-2004, 07:19 AM
bbodyguy
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I shy away from gas-matt batteries. Like ni-cads, they have a significantly lower esr (resistance) that is great when you are draining it for your stereo. Not so great if you have to "fill it up" again via your alternator. It puts a hell of a load on the alternator by maxing it out until it is "full". Just get the biggest damn conventional battery that you can fit, get the biggest wire you can afford/ fit, and you should be grinning.

Peter
post #9 of 20 (permalink) Old 02-04-2004, 05:49 PM
lonnie5
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Well I dont think its to much power lol, I had not to long ago 2400rms to my 15 adn soon to be 2400rms again o my single DD 9515E again. I have a stock alt on my 91 caprie with stock battery up from and a 4 gauge monster cable kit. that is it and I could drive day or night for as long as I want and have no probs. I dont know what your problem is man.
post #10 of 20 (permalink) Old 02-04-2004, 11:08 PM
threeimpalas
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A battery won't solve the dimming problem while the car is running. It will only lengthen the amount of time you can run the stereo while the engine is off. You need a higher output alternator, larger gauge wire, and perhaps a properly sized capacitor.
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