How many amps on my alt?


Can somebody please help me. I have a Rockford fosgate bd1000 mono channel amp at 1000rms @ 1ohm. And i have 2 12" Premier subwoofers that handle 1000 rms. the question is how many amps do i need on my alternator in order to run my 91 buick century safely without blowin it out my alternator?

Bronze Member
Username: Mtxaudiouser

Post Number: 17
Registered: Aug-05
i think it would be safe to buy a HO high end alternator

New member
Username: Mrgalindo63


Post Number: 5
Registered: Aug-05
I'm sorry if anybody misunderstood, I mean how much amperage do i need for my alternator for this system to run it safe?

Bronze Member
Username: Xkawn

Post Number: 76
Registered: Jul-05
doubt you need one for only 1000 watts. now, if you add an amp for your highs and mids you'll need one.

Bronze Member
Username: Killerzracing71

Fredericksbutg, Virginia United states

Post Number: 17
Registered: Aug-05
try it first thats what i did i i have no problems with my system

Silver Member
Username: Alias747


Post Number: 629
Registered: Apr-05
1000 wrms??? On a stock alt? No way! Your going to need to upgrade. Even if your alt was producing a constant 14v (which it won't) you would still need 71 amps to run that amp. The average stock alt is about 75A, and that is average, most are alot smaller than that. If your gonna be running that amp on your stock alt, your gonna have to keep the volume way down, which your not going to wan't to do.
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