Originally Posted by 2channel8
Remind me what are you using to drive your Cantons for music? I assume you are pleased.
In analog times i preferred the bigger Kenwood ones, it was sad to see how this company went south. For the digtial age i switched to Anthem AV. ARC is simply awesome. For two passive subs i use a separate Velodyne since Canton had nothing comparable, didn't want to run power cables to where the subs are...
The brand of amplifiers is not so important, better stay with what you like and got used to IMHO. Rule of thumb is to have the nominal RMS wattage or more available at 4Ω. If you really use them at high volume go even higher.
In case the additional power amp is not rated high enough or of lesser quality you might try passive horizontal bi-amping. Then the bass section should see roughly 3/4 of the rated RMS wattage. You need to SPL calibrate the amps. Normally only active bi-amping is worth it. Not really easy but a lot cheaper with digital active xovers becoming affordable lately...in an analog receiver world you would use tape/monitor loop to route the bass section with active xover to the external amp. So not really for analog purists or non geeks. The old Ergo RC manual is a good read
for basics while the RC box was not a xover but a simple equalizer for room modes, unfortunately they ripped most of the valuable infos in the generic speaker manual
. But back then there was no internet, so....
Its way easier to simply add a good enough amplifier, i think anything else is just for proovin a point when money or tech isn't there.