Quote Originally Posted by jester View Post
If your using amps for both the tower speakers and the boat speakers you can put the boat speakers on the front channel RCA's out and the tower speakers on the rear channel RCA's out then just use the deck to fade between front and rear depending on what you are doing. It does not coast as much as a EQ and if that is all your looking to do would work without an issue.
True, although fading to adjust tower vs. boat isn't something you can do on the fly or from the driver's seat like you could with an EQ. And you can get a very nice Clarion EQ for $50.

Another option if you run separate amps is running the amps' remote turn-on wires to the empty "accessory" rocker switch, and powering on/off the tower amp and/or cabin amp. This is free and can be controlled while driving.