k heres the deal i got an e1800 jl amp mono block and 2 jl w6s in a single box ported and a MTX 7500 in its own box all hooked up to the single amp and there just sittin on my back seat in my truck what would be the best way to set it all up should i put a power cap so my voltage dnt drop and deliver constant power or should i run the MTX on a separte amp and i might put 2 more 12s should i rerun another power wire or use a distrabution block?

 

Get a second amp.
Also make note of speaker impedances and amplifier load capabilities and don't go below manufacturers specs on the amp.

Forget the cap. Make sure that your battery is well grounded, and if you still get voltages drops, upgrade the wires coming off your alternator too.

 

Upgrade the big 3, such a simple upgrade.

What size of wire do you have installed right now? If you want to power 2 more 12"s, you'll need at least 2awg