Here's the deal guys, I just got a MTX 6304, 4 channel amp to power my Polk DX-7 door speakers. The owners manual says to use 8 gauge power wire but the one page install sheet that comes with the amp says to use 4 gauge wire. What's up with that? I was thinking of going with a 4 gauge power wire to a distribution block and then running 8 gauge wire to both my amps. Is this ok to do or am I going to screw something up?

Thanks,
Bob

 

Imagine you have to breathe through a straw, would you rather breathe through a coffee stirer or a regular sized straw? If you think about it power wire is the same thing, the bigger the guage, the more efficiently the current travels. You will not hurt anything by running 4 guage, in your case you may want to with two amps. Good luck!!!

 

Should I run a single 4 gauge wire into the cab and then split it into 2 4 gauge wires, one for each amp? I'm kinda new to this so I don't know.

Just thought of another question or three.

What brand of RCA's should I run from the HU to the amp for the speakers?

My HU has a single RCA for a sub. How does that hook into my 4250D?

What gauge speaker wire is recommended for my door speakers?

I know, I'm a question machine but I'm trying to learn before I rip the interior out of my truck.

Thanks for all input
Bob

 

4 gauge to your distrubution block, 8 gauge to your multiple amps should in your case surfice. or 4 gauge to be safe.
any brand name rca's are good, go middle man. 80 bucks is to high and 10 is too low..( also run your rca's on the other side of the truck from the power) power one side rca's the other side..
it causes noise if you don't.. if you are going to the door from the amp run a little thicker then stock, ask the guy you buy your rca's from.. and power wire.
MAKE SURE YOU PUT IN AN INLINE FUSE 12 INCHES FROM YOUR BATTERY. people over look this and pay for it later, never relay on your amp fuse!!
fuse should be about 10 amps less then your 2 amp fues combined.
have fun..

 

I agree with everything Icon said. I would use 8 guage to the amps from a fused dist. block. When I was running my Planet Audio PA6005(5 ch. amp) all I did was run thicker speaker wire from the amp up to the factory speaker harness. I did not feel like running new speaker wire to all four speakers and honestly this worked fine. As far as wire choices go, I would use a Phoenix Gold or a Lightning Audio, and make sure they are gold ends and oxegen(sp) free. When you say your HU has only one RCA for your subs, do you mean it has a single strand or you only have one set of RCA's on the entire HU?

 

It has a twin RCA for the front speakers, I twin RCA for the back speaker and a single RCA for the sub. By single I mean it only has one connector. The HU is a Blaupunkt Hamburg if that helps. It seems that I might have to get a "Y" connector for sub RCA but I dont' know. I'm going on memory on these connections because the HU I bought was damaged and I had to send it back. I'm still waiting for a new one.

 

Here's another little thing most people dont think about.

If space and proximity of the two amps allow, ground them together. I currently have two 4 gauge grounds from the amp going into a ground distribution block with a 3" 1/0 gauge ground wire.

It doesn't sound like much, but it got rid of all the initial turn on noise and pop that I had when they were grounded seperately.
Just try to remember and keep the ground wire as short as possible. The longest ground I have now is 6 1/2"

 

and your ground HAS to be as big as your power wire. or you are wasting your money on bigger power wire. ground wire I ment.