How to hook up two or three amps?

How do i hook up three amps for two subs and 4 speakers with a crossover?

• I have 2 12" kickers i want one amp per sub to push them and another amp to push all my other car speakers and i want to have a bass controll knob for the subs that controll both as if they were one sub and hook all that up to my head unit, im not sure what crossover kit to get and how to hook up all the remote wires, i have pretty much everything else like the power block distributer and all the other wires, im just a little bit iffy on what exactly to buy

• Answer:

  I don't know of any "bass control knob" that can cortrol 2 amps at the same time. If your head unit has a dedicated subwoofer preamp output or the ability to switch the rear outputs from "rear" to "subwoofer", you can effectively control the bass boost to multiple amps from the head unit itself by splitting the preamp outputs. You do not need any "crossover kit". Just make sure that the amps you select have a built-in crossover suitable for separating the frequencies for whatever speakers or subs they will be powering. But, why not just power the subs with a single amp that outputs twice the power? There's less wiring, it's less expensive, and fewer things to go wrong.