BriConAir

Hi Carver fans & techs, I have been looking for the fan motor for my PM 1.5, this amp is likely the first gen of the PM 1.5 (Around 1986). What's important is the replacement has to be exactly the same motor with the same specs. This amp is still being used in a pro audio application for shows & events. And the replacement must be able to have that variable speed ability, and again the same motor. Does anyone have the part number for this motor? Two more questions: Does anyone have the schematic for this amp? And where can I find a volume knob for this amp? Thank you for suggestions