If you are running these under horns you may want something more flexible, like a fully DSP capable crossover ahead of both of your amps. If these are being run purely as subs then that's not an issue.
Passive subwoofer amps help!
I acquired two massive subwoofers (over 230lbs each) that were mated to a $100k+ custom system and I need to power them somehow. In my limited research, I'm a bit confused about all this. I'm used to my subs being powered. The subwoofer amps I've found by Dayton Audio seem to be very lower powered. Can I just buy an SVS PB16 amps off ebay and build a box and use that? That gives plenty of subwoofer power and the ability to control with phone. Or is that a big sin in the subwoofer world? Why are there not more external high powered solutions for this with a volume knob, low pass knob, and phase switch on the front.
I did look at the Klipsch RSA-500 but it specifically lists the subs this amp is to be used with. Also, for $1k+, it's not that powerful.