My voltage is slowly decreasing

[hondarider 10+ year member]

I have a kicker zx750.1 for my subs and for the first couple weeks after i got it i didn't have any dimming problems and my volt meter on my dash was always at about 14.4. But lately my headlights have been dimming slightly and today my volt meter was almost below 13 before i turned the music down. Will I need a new alternator or just the big 3? And i plan on getting another amp (probably about 100 watts rms x2) for my front stage. Will my stock electrical system be able to handle all that?

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[JAZN 5,000+ posts]

You should do the big 3 first and see how much that helps.

 

[Johnny Drama 5,000+ posts]

What car? The monte carlo?

 

[luvinthebass 5,000+ posts]

how old is your alternator?

 

[hondarider 10+ year member]

Yep its the monte and the alternator i guess is a 2004 since its the stock one. I think it is 105 amp alternator but i'm not positive.

 

[luvinthebass 5,000+ posts]

your obviously drawing more then 105 amps, (how much is your amp at 4 and 2 ohm loads?)and makin the lights dim and voltage drop, i have a 120 amp alternator and have 600 rms goin to my kicker cvr 12 and i don't get any lights dimming. i like this setup and i don't wanna go bigger.

 

[hondarider 10+ year member]

My amp is rated at 920 watts rms at 2 ohms and it has 2 40 amp fuses.

 

[luvinthebass 5,000+ posts]

920 divided by say 13 volts(good number) = about 71 amps of current, i don't get it, do you have alot of accesories on when your system is goin?

 

[hondarider 10+ year member]

No, everything else is stock. I'm starting to think it could be the big 3.

 

[luvinthebass 5,000+ posts]

i'd do the big 3 then man