How much power can my alternator handle?

 

Bronze Member
Username: Weezer4rock

Post Number: 12
Registered: Dec-07
I've got a 2000 Civic with an alternator rated at 75 amps. How much amplifier power do you think my alternator can handle safely?
 

Platinum Member
Username: Wingmanalive

A pic is worth 1000 posts!!

Post Number: 16605
Registered: Jun-06
75 amps isn't much. Top of my head I would say 750w and below?



Other informed members will chime in.
 

Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 7454
Registered: Jul-06
Thats a good estimate Paul.
 

Bronze Member
Username: Weezer4rock

Post Number: 13
Registered: Dec-07
do you mean rms?
 

Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 7466
Registered: Jul-06
Yes always measure wattage in RMS never peak, it is useless.
 

Gold Member
Username: N2audio

Lawrence, Ks USA

Post Number: 1578
Registered: Mar-04
it depends. There is plenty of anecdotal evidence that a 60A alt can sufficiently power a 1000w rms system, but others have had trouble with a lot less.

Personally - I had a car with a 75A alt. A lot of enthusiast owners of that particular car believed the alt was undersized W/O any aftermarket electronics. Regardless, I went ahead and installed a 1000w+ system. It wasn't ideal, but it ran ok for 2 yrs or so.
 

Gold Member
Username: Th3pwn3r

I compensate...

Post Number: 8098
Registered: Jul-06
Efficiency of your amplifiers plays a huge role in what your alternator will support wattage wise. You might have 2 different amps that produce 1,000 watts RMS but one only uses 50 amps for example versus 100 amps.
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