2000 rms too much for 80 amp alternator?

[cyantist 10+ year member]

2000w RMS from an 80A alternator is physically impossible.. Here's a simple way to remember: 100w = +- 10A, therefore 2000w = +- 200A.. This is a general rule, but is close enough fo our purposes..

Just remember, power doesn't come for free.. Just because you get a 2000w amp doesn't mean it will output 2000w.. You need to have the current to back it up.. 6kw on a stock alternator is NEVER going to happen.. Remember, 6kw = +- 600A.. Simple math.. You're only going to get out what's put in, not what the amp is rated for..

 

[killahbean 10+ year member]

2000w RMS from an 80A alternator is physically impossible.. Here's a simple way to remember: 100w = +- 10A, therefore 2000w = +- 200A.. This is a general rule, but is close enough fo our purposes..
Just remember, power doesn't come for free.. Just because you get a 2000w amp doesn't mean it will output 2000w.. You need to have the current to back it up.. 6kw on a stock alternator is NEVER going to happen.. Remember, 6kw = +- 600A.. Simple math.. You're only going to get out what's put in, not what the amp is rated for..

x2 it'll get u by for now just with big 3, extra batt, 1/0 gauge....till u can upgrade your alt......

 

[DeuceLee 10+ year member]

x2 it'll get u by for now just with big 3, extra batt, 1/0 gauge....till u can upgrade your alt......

yeah thanks cyantist and killabean, i was also going kinda with what you were saying too n2audio...

anyways, i don't blast my system that much at all...maybe like once a month for the hell of it...but most of the time, its turn up very moderately...

i think i will go with the big 3, batt and big wire...

i've been having problems finding a high output alt too...theres 150-160 amp alts on ebay for 93-97 prizm (corollas) but non for 98-up which is what i have...they go for about $180+shipping

other places that i've found online like excessageamperage wants like friggin $360 + shipping...i was looking at something more like under $250...

well, thanks for all your inputs...

 

[MrSwiss 10+ year member]

def invest in a stronger alt. i killed 2 of them off much less amperage.

 

[n2audio 5,000+ posts]

anyways, i don't blast my system that much at all...maybe like once a month for the hell of it...but most of the time, its turn up very moderately...

If that's the case you should be fine temporarily.

Being that the big amp's class D, and that 1800w is an optimistic rating, it might actually work for quite a while.

You definitely WILL be putting some stress on that alt though.

My car had a 75A alt in it originally, but my car is on the demanding side electrically. It's common to upgrade the alt even w/o any aftermarket electronics simply because the 75A is undersized. However, I ran about 1000w rms with it for a couple years before it let out the ghost, and it was well over 200k mi.

So - I'd say don't panic, but have a contingency plan in case your alt doesn't last long.

 

[blue93corsica 10+ year member]

definately recomend getting one of those capacitor thingys, you should be fine with a .5 farad, that will help your dimming lights, also make sure it is one of those ones with the battery display so you know when something is going to happen, i know this cuz i asked the guy at best buy and he definately recomended it and said its a must have for all systems

good luck //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif!!!!!

 

[killahbean 10+ year member]

I have a 2.2 farad cap f/s if ya want...you can wire it up between the 2nd batt and the amp in the trunk....it has the Digital display so you can see what voltage you're at whenever u pop your trunk //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[cyantist 10+ year member]

definately recomend getting one of those capacitor thingys, you should be fine with a .5 farad, that will help your dimming lights, also make sure it is one of those ones with the battery display so you know when something is going to happen, i know this cuz i asked the guy at best buy and he definately recomended it and said its a must have for all systems
good luck //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif!!!!!

//content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

 

[prochobo 10+ year member]

My stock alt is 90 amps and I've been running 1600w for awhile now. I usually blast it too . My alt holds up fine and so does my stock battery. Big 3 done and that's it.

My alt used to idle at 14.4, now it's doing about 14.1, it's dying //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif.

You'll be fine though, just get the big 3 and possibly a bigger battery. I doubt you're going to be using the amp's full potential 100% of the time.

 

[AJ²06 5,000+ posts]

My stock alt is 90 amps and I've been running 1600w for awhile now. I usually blast it too . My alt holds up fine and so does my stock battery. Big 3 done and that's it. My alt used to idle at 14.4, now it's doing about 14.1, it's dying //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif.

You'll be fine though, just get the big 3 and possibly a bigger battery. I doubt you're going to be using the amp's full potential 100% of the time.

Mine too... 1200w rms... :|