The power chips in mine are G60N100 60A 1000V IGBT's. I blew 2 of them in my controller and was able to find replacements at Mouser. I still haven't recovered from that debacle, but I have been able to get my motor running using an AMC B30A40AC running on 220VAC. I am still working out the kinks, but I have manual control of speed from a pot from 0 to 3600 RPM motor speed, and have briefly achieved CNC control using a Gecko G540 but haven't finalized all the wiring to button everything up.
I plan on writing up my findings soon and posting to the SX3 Speed Control thread.