Yamaha DTXpress/DTXplorer/DTXtreme

Darren:
Welcome to the group. Before you discount the KP60, have you checked 
the A/B switch on the front? Have you also tried the volume knob on 
the front?
I've gotten to gigs before where I've set up and started to do a 
sound check and found that I had no bass. Cripes! We go on in 15 
minutes and I have no bass. Instant FEAR! I've now learned to see if 
the A/B switch had gotten reversed in transporting the pad.
That may be the problem.
And please pardon the suggestion if you've already gone through that 
exercise.