Sub to complement KEF LS50s: SVS vs. Rythmik

nobel100
Wow, thank you for the input. Your last point is one I've wondered about over the two years I've had the SVS...positioning. I recently read...who knows where...that in spite of traditional wisdom (i.e. you can't tell where those frequencies are coming from), that location can make a serious difference. What I remember is that they should be side ways from the primary speaker and behind. My current one meets the first but not the second criteria...if I'm remembering correctly....but bass integration in my room is pretty reasonable.  Actually, what I have been paying attention to most recently has been the lack of crispness or depth of voices (particularly female singers). This may be source material but the ones I love (Holly Cole, Siri Svale, Patricia Barber) have typically been well regarded productions. I'm going to take a rain check on your kind offer to help with the bass things until after I try out your recent suggestions (above) for bass management and play around with positioning to see if that helps with this "crisp" issue.  In between my own over abundance of retirement hobbies.  Cheers and thanks!

Great info! So i have the LS50s in a small room (12x14) with a single SVS SB-1000 with an all solid state front in (Mytek + Bryston) except for my vinyl and feel like it integrates nicely.  One of the original pluses of SVS for me was their tuning service. You call in after purchase and they have a bevy of knowledgeable guys (typically subcontractors...mine was in Texas) who walked me thru balancing the system. I would love to try a swarm but with a small room like I have, there's just not the room, physically or aesthetically. 

My interest, for now, is whether or not a second sub would add anything to my listening experience....? System seems very revealing now and like many, I listen to jazz and other equally intimate source material.