I'm planning on buying a Gallien-Krueger SBX410 cab, which is rated for 400 watts at 8 ohms. I want to hook it up to my Eden 1x15 combo (the cab is history), which puts out 200 watts at 4 ohms. Naturally, I don't want to cut my power in half going to the cab. Is it possible to get a cab modified by someone from 8 ohms to 4 ohms?