Velodyne DD15 - worth repairing the plate amp?

@keppertup2  Thanks for that contact information and your experience with them.

Yes, EBC (Matt) already received the amp. 
I made a back plate (with speaker cable pass through) to seal up the enclosure (RTV silicone around the speaker cable, used existing screws). RTV should be hard now, so will test tonight if enclosure 'holds air' (enough). Also brought one of by Class D amps up, so (assuming rain day tomorrow) will hook it up and test. Plan to run Audicy with the receiver and sub connected for initial setup, then dial in sub volume a bit more (but cannot change crossover frequency). 

So, did a quick temp hookup. QSC CX702 (one channel) fed from sub out (cross over at 50 Hz) to passive Velodyne DD-15. 

Very tight. 

Surprised: The QSC (class H) driving 1 channel only has clipping light coming on at higher (not crazy, but loud) listening levels. 

Does someone know what impedance the Velodyne driver has? 4 Ohm?

Assume the driver is not 2 ohm, I will try bridged mode (and make some better cable connections, very sketchy right now for the quick trial setup). 

If so, I am using all of the QSC's 825 Watt! 

8 Ohms:
425 W per Channel (Full Range, 0.03% THD)
4 Ohms:
700 W per Channel (Full Range, 0.05% THD)
8 Ohms:
475 W per Channel (1 kHz, 1% THD)
4 Ohms:
825 W per Channel (1 kHz, 1% THD)
2 Ohms:
1200 W per Channel (1 kHz, 1% THD)
16 Ohms:
850 W Bridged (Full Range, 0.1% THD)
8 Ohms:
1500 W Bridged (Full Range, 0.1% THD)
4 Ohms / 8 Ohms:
2400 W Bridged (1 kHz, 1% THD)

I have a DD-10 that's apart and it measures 12 ohms. I never checked the 15 when it was apart. Do you have a multimeter?

Yes, i need to measure the woofer. 12 ohm sound VERY strange though.