I have a Legacy LA 290 amp, (400w), and I will be picking up a Mono amp, (1200-2000w), just wondering Guage of wireing I should use on my + from the battery. I will also be using a Distrubition Block because of the 2 amps.
Also, what guage should I ude for ground ? I was told use same Guage as +.

Lastly, how do people connect such large wires, 4g,etc, to their amps, while the slot that you screw the wire into is so small ? Is there some type of adaptor ?

 

I'd go 0/1 (or 2 4AWG) runs to the distro block, then break it off into 1 8 gauge wire for the small amp, and 1 4 gauge wire for the big monoblock. Same thing with the ground.

 

http://www.bcae1.com/images/swfs/systemdesignassistant.swf

how to fuse and wire size...

 

Ok thanks.
And for the last question.

how do people connect such large wires, 4g,etc, to their amps, while the slot that you screw the wire into is so small ? Is there some type of adaptor ?

 

u can use U connector but usually it fits in most amps...

 

Your monoblock should come ready to accept 4AWG, if not 0/1.

Your lil' amp only needs a run of 8 or 10AWG.