At the moment I am planning on running 4-6k watts to my subs, and about another 1k to mids and highs. I plan on getting 300 amp alt (of course I will have extra batts) but my question is this, is one 300 amp alt gonna be enough or do I need to run dual alts?

i'm gonna be runnin 4,900w and a 300A alt is almost there.

I really need a total of about 450A worth of alt power but it's impractical in my car.

You would need about 450A worth for 4K + 1K for mids\highs or for 6K + 1K for mids\highs, you would need about 560A worth of alt power.

However, since these numbers are just about impossible to get, minimal alt power can be-

for 4K setup - 300A alt, for 6K setup - dual alts, 1 200A, 1 250A.

For batt power -

4K setup - minimum of 250aH worth or something very close

6K setup - minimum of 350aH worth or something very close.

I hope your suspension system can handle such weight.

4K setup for batts will weigh in around 155lbs

6K setup for batts will weigh in around 220lbs

i talked to the guys at ohio gen and (at the time) i was going to run about 6-8k watts (sketchy amps...power wasnt accurate) but he said 8k on burps would be fine with a 200 amp alt. since that's basically what i was going to use it for. i dont blare it and listen to it constantly. but it depends on application basically. i'd try to get the most power you can.

the 300 amp alt (maybe antoer alt if you can fit one) seems like it'd hold up decently, tho your idle amperage will most likely drop

nah, gettin a smaller pulley so i can get 140A at idle.

5000watts, 250amp alt, 1 kinetic 2400....

i have no prollems, bae bae...lol

idk my amp is pretty efficient though