Is there a difference if I use 4 gauge wire instead of 1/0 gauge for my amp?

Question

hi my amps manual recommends I use 1/0 gauge wire for my ground and 12+.

The amp is an mtx thunder 1501d (1000 RMS @ 2ohms) but since I have two 4 ohm dvc I’m getting 500 RMS @ 4ohms.

So I would like to know if I still need to use 1/0 gauge wire, even though I’m getting only half the amps power??

(The reason why I didn’t use 1/0 gauge is that I didn’t have enough, I only had just enough for the 12+ but for the ground I used 4 gauge.)

I haven’t played the amp yet worried something might go wrong…??

(all the rest is wired correctly)

Answer 1

in theory you could reduce the wire size where they are separate to each speaker by 1/swqrt2 of the original size in dia (in or mm)  in practice its easier to use one wire size throughout.  stop being a miser and do it right, that will sound better.  you could use a heavier wire if you wish.

Answer 2

take that oct guage off if u dont have oct guage ground man.

1000 watts is OK for non wal mart 4 guage. actually, it goes by amps.  its a class D amp so ur guaranteed like 75% efficient. u could have about 1500 watts before u need new wire