ok, I have a linear power 150 watt amp(per channel). I can open it up and set it for 2 ohm or 4 ohm. Right now, I am using both channels to push 2 12's at 4 ohms. The speakers are single voice coil. I don't know the specs of the speakers, they are cheap lightning bolts from best buy. Can I run the speakers parallel, dropping the load to 2 ohms, and change my amp to 2ohms, then run them into a bridged channel? Is it better sending 150 watts to each speaker at 4 ohms, or running them parallel, and sending 300 bridged watts to them at 2 ohms? And the amp is not power regulated, whatever that means, I don't know.