Going to be getting a good deal on a Carvin BX1200. I will be using the Bridge mode into an 8 ohm cab. I thought I read somewhere that with this amp, the Speakon cable did NOT need to be wired for " bridge " , but that a regular Speakon cable can be used. True? Also, since the Amp 1 power knob, the Master, and the Drive all come into play in Bridge mode, where do you guys usually set thesse controls ? Just looking for clean headroom here, no overdrive in my tone goals.