Amp with built in driver on an unregulated power supply?

I have a 250 amp unregulated power supply that floats around 17v. I would like to run a 1x6 amp (2290 driving six 2290's) on this power supply. The amp is a custom amp, so I know it can handle voltage, but I'm concerned about the driver section.

Can an amp with a built in driver be run on the power supply? Or would I have to get the driver section removed or bypassed?

Thanks for any help.