Can you use 2-wire Speakon® cables for the B1 bass modules?
No. Only 4-wire Speakon® cables should be used with the power stand. The additional two wires (+2 and -2) in the connector are used for sensing purposes. Upon connection, the power stand is able to sense and adjust (EQ and level) for 0, 1 or 2 B1 bass modules connected to the bass module Out Speakon® connector.