I'm setting up a new system powered by 2 amps (sub, speakers). Totalling around 550w RMS for all components.

I'm going to use a distributor block for power and ground, but I'm not sure how they work in splitting current.

The amps recommend 4 guage for power and ground, so what gauge should I run from the battery to the blocks? Blocks to amps?

What gauge wire should I use to upgrade the battery - chassis ground?

 

Power Wire and Fuses / Holders ("what size do I need?")

2 gauge to the block and 4 to the amps is MORE then enough!

 

Thanks, I did check that but it was a little confusing in terms of my situation.

So 2 into 4 gauge it is.. Should the battery ground be 2 gauge as well?

 

Forget the distribution blocks, run 2 power leads, one for each amp, run the ground leads from the amps directly to the ground point, preferably the cars floor pan and a common ground point for both amps.

There are three very good reasons to do it this way....

1- It is cost effective, you save the cost of the splitter bloc, [ground] and distribution block and fuses, [power] cost more then one more main fuse.

2- A direct connection is a better connection, every connection point is a point of resistance and because of oxidization resistance can and will increase with time.

3- It is better for SQ, "electricity takes the coarse of least resistance" when the high-pass amps power supply is "electrical" closer to the low-pass amps power supply, then the low-pass amp is from the batt./alt., [when distribution block is used] then the low-pass amp will "draw power" from the high-pass amp when it needs it, [cranking the bass], this results in a loss of power, [current] to the high-pass amp and distortion, [most noticeable in distorted vocals when bass hits].
It also allows a cap to "stiffen" the power supply of the low-pass amp only, [not needed for the high-pass amp]. 94