i have two re sx 12'' dual 4ohm, just bought a tru h-1, rated at 1500 wrms into 1 ohm load.also got a tru 2.200. my question is will i have to uipgrade my alt, and battery?if so what will do?they are going into a 2500 crew cab gmc with 6.0L v-8. im doing the system myself with fiber glass for the 12''. audio shop here not veryu helpfulleither.thank you very much.
Okay, again im no pro at this but i have went through enough alternators that i am seriously thinking of just getting a small system. What i have understood from researching this is:
1500 watts at one channel
1500watts (2) / 13.8volts = 217.39 amps
Now this just a projected current draw at full power, if your just using you radio at 1/3 the way up most of the time you would divide that number by 3.
So around 72.46 amps
If you think your alternator can handle an excess of around 72 amps then dont upgrade.
Personally if i were you i would upgrade the alternator and get a cap just to be safe and plus the cap will give the amp the power it needs at the right moment so you will get the best sound quality without killing your battery or charging system.