Parasound: I have zero experience with Ohm subs, but two things make me optimistic about them. 1 - You get a 120 day return option, risking only shipping. 2 - John Strohbeen knows how to design and voice loudpspeakers. Why not try one out and post your impressions?
Well, I've had my Ohm Walsh Center speaker ($700 + shipping) for a week now, so I'd thought I'd comment. This is the smaller version of the center, roughly 20" wide and 6" deep. The cabinet is only about 2 or 3 inches high, with the Ohm Walsh driver mounted on top in the center. This is a smaller Walsh driver than in my 2000s, and rises about 6" above the cabinet for a total hieght of about 9". Fit and finish of the black wood-grain is excellent. As per John Strohbeen's recommendation, I have the center tilted down toward the listening seat, since it sits atop my ancient SD RPTV. I sit about 10 feet back from the TV. As per Ohm, the Center is crossed over at 80Hz via my Sherwood-Newcastle P-965 pre-pro. Bass is supplied by a Definitive Technology PF-15 sealed 15" sub with a 185-watt internal amp. The bass and LFE signal are smoothed out using both a Paradigm X-30 sub controller and Behringer 1124P FBDP parametric digital EQ.
This little Walsh Center is an Ohm Walsh speaker through and through. It has the same clarity and definition of my 2000s, with a very smooth presentation of both music and dialog. Several films I have viewed using the Walsh Center were in Dolby Digital 1.0 - i.e., mono. Even though all the sound above 80Hz came from this one small speaker, there was no apparent lack of dynamic impact or any sighns that the Walsh Center was being pushed too hard.
This center is an excellent compliment to my 2000s, and along with the MWTs I found used for surround speakers, soundtracks sound wonderful - realisitic, natural and enveloping. So much so, I am seriously considering removing the Paradigm Atoms that reproduce the back-surround channels. Another solid product from Ohm.
