can i do it

[rumple4skin 10+ year member]

ahhhh....
*epiphany* you want to leave the 4awg and run additional 8awg........

if you are going to pull the carpet and trim, you might as well pull the wire and replace it with the good stuff

wire is on the way **** you!!!! i prob wont hide it to well, its all fun and games anyway and as i said it will only be for a short time. or do you think i need to have the 1/0 gauge and split it down to reduce resistance?

 

[darkhunter139 10+ year member]

Hmm would it be better to leave my 8 gauge run in there and run my 4 gauge on top of that

Or should I pull my 8 gauge wire out, run the 4 then use my distro block to run 8 gauge to both of my amps (I dont know if that will work for my 800 watt amp)

 

[dman4486 5,000+ posts]

1k total should be ok with one run of 4 awg.
but for OP, you should upgrade to 1/0 then use a distro block and run 4 awg to each.

For a short time, before I put in 2/0, I had one run of 4 awg going the back, then two runs of 4 awg from distro block going to amps, running 1500 rms +.... but its not a good idea for a permanent setup.

I am running a 1250wrms and a 75x2 on a single run of 1/0 to a pair of 4awg.......but I rarely have the sub amp running max rms

 

[dman4486 5,000+ posts]

2x 4ga > single 1/0 i do believe

can't remember ATM