I need some help with my set up. Currently I am running an Ampeg SVT 350H with an Ampeg SVT 410HLF. I have been thinking about picking up the SVT 115E to add to the stack. 4x10 plus 1x15 would be insane. I am not sure if the head I have can handle the set up as a whole. The SVT 410HLF has two imputs on the back of the cab and runs at 4 ohms. The SVT 350H has two outs reading 200 watts at 8 Ohms and 350 watts at 4 ohms. Question: Can I add the SVT 115E that runs at 8 ohms to that head without destroying the world? How will this effect volume? I want this set up to be fairly loud and really booming. volume is important since my band has been really using dynamics alot as of late. Adding the SCP-OCT octave pedal has been fun, but I still feel going with the additional 15 cab would help out more. On cabs with multiple imputs do I need to use both or just one? Am I going to waste my cash with a new cab or can this be done with the Ampeg SVT350H?