Subwoofer for classical music listener

I added an 18" Velodyne to our system (we too listen to 90% classical) and set it to a relative low level. Even though it is off to the side, the deep bass still appears to come from the center between our main full-range speakers. Bought it on Audiogon for $1250 and drove two hours to meet the seller half-way. It has proven to be a great investment.

sevs said: "If you cannot bring pipe organ into your living room, then all the heat of some previous posts is moot, at least for me. I tried and failed!"

rvpiano wrote: "I just want to be able to hear the fundamental tones of, for example, an organ."

A good subwoofer well placed may let you hear the fundamental tones of an organ or large bass drum; however, unless you live in a cathedral, you will never successfully "bring a pipe organ into your living room," in my experience. The goal is for your system to sound more convincingly realistic and musical in your room than played through the best of headphones. If it does, you have succeeded and can relax and enjoy the music. 

I want to acknowledge almarg for all of his informative and practical posts in this thread. I learned a great deal and appreciate your very generous investment of time. You are not only extremely well informed but also exceptionally kind and patient. You represent the best of what the Audiogon forums should be. Thank you, sir.