Okay six speakers four channels will go providing you have one set of full range speakers (e,g decent pair of 6 by 9s with built in tweeter) and a set of woofers or mids Not sub woofers and a set of crossovers and a set of tweeters.

The full range speakers would go to the rear of the car and then the tweeters and mids/woofers would go to the front of the car.

Just to repeat what tony said don't put speaker outputs into empeg you may toast it