I'd also take a listen to the NHT Sub 2. I know, I was skeptical too at first till I heard it.I use it with Newform Research 645's & it blends in great, fast, tight& musical with no boominess at all.
Natural sound (REL Subwoofers)
I am looking for a natural sounding subwoofer, and I hear that REL makes some of the best in the business. I am interested in the REl Stadium and Stentor. Has anyone had the opportunity to try these subs or make comparisons to similarly high-priced subs? I have heard less expensive subs like Sunfire and Velodyne and they seem too boomy, and therefore not worth the money...I am looking for something that will add ambient "space" to my music. I have heard the Snell 18" subs that go with the reference "A" speakers ...very nice sound but too big. Others that I am considering are Audio Physic, and Talon. Please tell me about your experiences, preferences, and biases. I have an aleph 3, proac 2.5s and plan on running them straight from a resolution audio cd55. Thanks