Have my tower speaker amp wired in and connected to the remote blue/white wire on the back of the head unit. The amp is bridged at 2 channels, 4 ohms pushing 350 watts per channel to Rubicon 350's. I get volume to the tower speakers but weaker than the boat speakers. I didn't get a Kenwood manual but downloaded one. I cannot control the volume on the tower speakers. I have to be missing a setting on the interface of the Kenwood, but I can't seem to find it. I was trying the CD/CH to get my AUX input display but nothing came up. What am I missing? Thanks.