brusk

iTrader: (1)

Ok I'm assuming a head unit isn't built that way but maybe i'm wrong. The Alpine HU in my boat is only running a pair of Alpine Type S 6.5's. They sound like they are just slightly underpowered by the HU. Is there any way to combine the power from the unused rear channels to the fronts? Bridging, running front and rear sets to the speakers. Never tried or thought about doing anything like that before but it's a boat not really worth putting any real money into and if that's all I can get no big deal it's better than what it had before, nothing.

partyd

No that is not possible you can't bridge the any of the 4 outputs
it will be better to find a small 2 channel amplifier