Voltage issue

[c0ke 10+ year member]

I have a 97 grand prix and i believe the alt is 135 amp..

i know i need a bigger one..ill get one..but

im running a AP30001D at 1 ohm putting 1500 RMS out..i have a redtop up front (4 gauge wiring) and a kinetik 2400 in the back..when i first did this setup i was getting 14.2v at IDLE never checked the drop when playing til today

i put the gauge on it and it was reading 11.9 to 12.4

now at idle im getting 12.6v now with no music playing..could this be a possible ground issue?

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[05fronty 5,000+ posts]

big 3? you need 1/0 not 4 gauge also.

 

[Skittles619 10+ year member]

Yup do the big 3 in 1/0 make sure all connections are solid.

 

[brmcm15 10+ year member]

big 3? you need 1/0 not 4 gauge also.

this. or u can use wielding wire

 

[c0ke 10+ year member]

yea we sell 2/0 at my work so ill pick that up

 

[audiolife 5,000+ posts]

I would check the resting voltage of your batteries as well. they both should be resting above 12.8 volts fully charged. You can also run a ground from the back battery to the alternator bracket to eleviate ground loops in the electrical system. 12.6 volts at idle would make me wonder if the alternator was ok.

 

[audiolife 5,000+ posts]

double post

 

[c0ke 10+ year member]

yea it doesnt seem right..cause sometimes the bass is really smooth and lights dont dim..and then the next it sounds weak and the lights dim..

ill do the big 3 tomorrow and see whats going on..anyone ever done it on a grand prix?

 

[c0ke 10+ year member]

yea it doesnt seem right..cause sometimes the bass is really smooth and lights dont dim..and then the next it sounds weak and the lights dim..

ill do the big 3 tomorrow and see whats going on..anyone ever done it on a grand prix?

 

[brmcm15 10+ year member]

yea it doesnt seem right..cause sometimes the bass is really smooth and lights dont dim..and then the next it sounds weak and the lights dim..
ill do the big 3 tomorrow and see whats going on..anyone ever done it on a grand prix?

shouldn't be too hard.

how much do u get the 2/0 for?

the lowes by the crib sells it for $1.90 per foot iirc

 

[c0ke 10+ year member]

2.21 a foot thats with my discount lol..might have to hit up lowes then..are copper lugs bad for audio? as battery connectors

 

[Phoenix Risen 10+ year member]

i hate to break it to you, but if your running an ap 3000.1d mono at 1 ohm then your putting out 3k watts

 

[c0ke 10+ year member]

lol no the ap30001d at 1 ohm puts out 1500x2 and im running it to one side..

it runs 3000x1 @ 2 ohm

all that amp is , is two ap15001Ds strapped

 

[CL1CKCLACK 5,000+ posts]

that may be a problem, i dont have ant experience with audiopipe but that doesnt sound right. why not just run both channels bridged at 4 ohms to the sub?

 

[SpeedEuphoria 10+ year member]

Seems strange to me but large wiring will help