I want to make sure I am connecting the SVT4 to the 810E cab correctly. I got this from the Ampeg website: Q7) When I use my SVT-4PRO mono-bridged the volume is not what I expected for a 1600 watt amplifier. What's wrong? Check your Speakon plug, it should be wired for +1 (positive) and +2 (negative) on the amp end. The cabinet end should be wired in the standard fashion, which is +1 (positive) and -1 (negative). Be sure to depress the stereo/mono-bridge button The SVT4 came with an cable that has a Speakon jack on one end and a 1/4" jack on the other end. My question is how do I know if the speakon end is wired for " +1 (positive) and +2 (negative)"? Would my rig benefit from getting a cable with speakon jacks on both ends? Can speakon jacks be reconfigured for "+1 (positive) and +2 (negative)" or do you have to buy them like this?