how does a capacitor work. wat kind should i get

[carstereopro]

Either when:
- the electical can't keep up
- sound quality suffers when bass hits
- issues w/ amps getting hot or shutting down
- anytime you want better power delivery and sound quality.

Just so you know the Jl 500/1 draws 80amps at full draw, the 400/4 draws roughly 50 amps at full draw, your alternator produces 80 amps at 2500rpm or higher.

at any rpm below 2500, and any volume level above half, you are drawing more current than you are producing.

Best solution is to upgrade the alternator, then wiring, then battery then add cap.

[Bitchin'e30]

What do a 250/1 and a 300/4 draw amperage wise?

[carstereopro]

not completely sure, but if you do the math, a 250 watt amp at 2 ohms should draw about 20 amps according to OHM's law. But the regulation circuit consumes 10 of so amps, so lets say 30 amps safely. the 300/4 should be about 40 amps.

I would estimate 60-70 amps total at full draw, using ohms law and adding a little for the regulation circuits of both amps.