Last year I put in 2 amps...1 for tower speakers and 1 for a 12" sub and in boat speakers. Worked great. This year went to fire up the system and for some reason the tower speakers and sub work great but all I can get out of my in boat speakers is low tones. I am using a clarion 7 channel eq that I hooked back up to the system but am pretty sure it is exaclty as I had left it. Any ideas would be appreciated. Thanks

swap the tower and boat RCA's on the EQ and see if it changes to the tower. If yes it's the EQ, if no it's after the EQ.