Agree with SVS, but especially since music is also important I'd go for dual subs (although should help with HT too). You can get a pair of SB12-NSDs for $1199 with free shipping. These are sealed, go down to 23Hz (-3db), and aren't too big. Given performance, quality, customer support, and value I think it's hard to beat and is the way I'm planning to go as well. The remaining issue is how you plan to integrate the sub(s) into your system, which is not an insignificant issue to say the least. Best of luck.
subwoofer suggestions
Looking for sub with balance between tuneful bass for music and deep bass for movies to be 0.1 part of Monitor Audio Apex 5.1 speaker system. Front speakers go down into low 50Hz while rears go down to mid 60s. Room is 8' high x 18' wide x 12' deep, is reasonably well treated, but size will limit the longest waves. While there is no point in overloading room with a giant box and driver, pressure and speed with good tone are all desirable assets. Upper budget is about $1500, but I will consider more budget conscious options.
Thanks in advance for your suggestions,
kn
Thanks in advance for your suggestions,
kn