90 Amp Alt Enough

[Fate710 10+ year member]

My car has a 90 Amp Alternator on it currently. I'm wondering if that will be enough for a Directed 1100D power a 18" SX and a Directed 6550 powering 6 speakers. Also will have a tv or 2 in there along with my ps2. Let me know.

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[skmfkr 5,000+ posts]

why does your sig say 115a? i got a re 35.1d (1500w) on my 90a and yeah it doesnt like it much, especially @ idle

 

[Winston_Smith 10+ year member]

I'm going to go ahead and say hell no. I have problems in my car with only a 600W amp and 80W Hu. Granted i have a 75A alternator. But your running a lot more power, with a not to much bigger alternator.

 

[knukonceptz 10+ year member]

Are you having a problem? Check your voltage - see what is going on with the system, you may not need anything.

 

[Raven 10+ year member]

I run an Orion 1200D on a stock 90 amp alt + big 3. No voltage drops for me. *shrugs*

 

[Fate710 10+ year member]

i am about to upgrade to a 115 alternator or bigger. i was just guessing on sizes.

 

[Lakota 5,000+ posts]

I run an Orion 1200D on a stock 90 amp alt + big 3. No voltage drops for me. *shrugs*

What about with test tones? I don't have voltage drops with music, only test tones.

 

[OldOneEye 10+ year member]

Who listens to test tones? If your are listening to music, probably not.

Juan

What about with test tones? I don't have voltage drops with music, only test tones.

 

[Lakota 5,000+ posts]

Who listens to test tones? If your are listening to music, probably not.
Juan

A lot of people try them out...

 

[Fate710 10+ year member]

I think I'm just gona upgrade anyway. Just incase I decide to upgrade amps in the future.

 

[woody89 10+ year member]

I have the 1100d on a 80amp alt and my lights dim with music but I have done the Big 3 yet. My lights barely dim with test tones though. I don't understand that.

 

[killahbean 10+ year member]

man just pop a cap on it man....

 

[knukonceptz 10+ year member]

*cough* buy a digital volt meter *cough * Ever here the phrase a system is only as good as the install..... we'll spend 2 grand on amp/speakers but $10 for real usefull tool is always over looked. If you do not know IF you have a problem, why add items without knowing what can fix it?

Everything is just speculation without seeing real numbers at the battery and at the amp.

 

[OldOneEye 10+ year member]

I know they try them out, (heck, I did too when I just finished most of my system), but unless your competing, why bother? From 90 to 115 isn't that big of a deal in my book (maybe if he had a 50 or 70 amp it would make sense).

Juan

A lot of people try them out...