Is it safe to use the GK MB150E-III combo as a backup for a GK 1001RB-II into an older rectangular GK NEO 212, this with the internal speaker of the MB150E-III turned off?
AND, if so, since the speakon on the 1001RB-II won't accept a 1/4" cable, how do I remove the plug from the NEO cab's 1/4"...