Subwoofers usually have their own amps to drive them, and they are easy to integrate into a system. My Paradigms, at least, have several pots in the back to home in on what you need. Buy something like a stereo test CD and let your ears do the walking/talking.
What does a subwoofer solve?
My previous amps were BHK 300 mono blocks. The bass they provided for my Monitor Audio PL 300ii speakers was exceptional. For several reasons I replaced the BHKs with a Luxman M900u. Very happy with the new amp, except for disappointing bass performance. Would a set of good subwoofers help resolve this, or do subwoofers only address a lack of bass in standard speakers?
Thanks in advance for any advice or suggestions.