Originally Posted by Soulburner
Since you're a music guy with panels, have you ever considered Rythmik? They probably have the best chance at smooth integration with such a hi-fi setup.
Though you're probably talking about your HT system. Still, I've become addicted to their high damping servo control, even for movies.
Hi Soulburner. When I went on my subwoofer hunt back in May of 2013, I had already went through months of research. I auditioned the Paradigm Sub 1 and the JL Audio F212 Fathom (although it was the F113 Fathom I was most interested in — the F113 wasn’t available for setup on the day I did my audition). I wanted to audition either the Rythmik E15HPSE (piano black) or Rythmik F15HPSE (piano black), but both subs were on a 6 month backorder, so I had to cross them off my list. I ended up auditioning two subwoofers in my home at the same time. The Hsu ULS-15 (Mk 1) I auditioned at their facility first, since Hsu Research is only 12 miles from me. Two weeks later I picked up a ULS-15 and took it home. The second sub was SVS SB13-Ultra. For music, it wasn’t much of a contest. The Ultra was better in every regard, and is everything I wanted and more. The Hsu was a bit disappointing, but by no means a bad sub for music (I did consider it for the movie room, but opted for the PSA XS30).
Since that time, I’ve also auditioned the DSS 24-inch Mariana and PSA S3000i. I’ve also heard (not auditioned with my music) the JL Audio E110, another JL Audio sub just released (don’t remember the designation), and the JL Audio G213 Gotham. All really good subs, but none had me wanting to trade in my Ultra ... not even the Gotham (didn't want to spend 10 - 12 grand, nor push around a 340 pound sub).
If you’ve heard panel speakers, especially speakers with very large bass panels (such as the planar-magnetics Magnepan 3.6 and 3.7), you would understand what I was looking for. I knew I’d have to get a sub that could stop on a dime. I also wanted a sub that could reproduce any material below 40 Hz, including 16 Hz organ pedals and Synthesizers that played anywhere from 16 to 30 Hz. I wanted the sub to take off where my Magnepans left off or couldn’t go (the 3.6 Maggies get down to 34 Hz). I did not want any sub, even the Ultra, to take away from the bass of the panels. The bass it reproduces is unique and blends with the midrange panels amazingly, and was one of several important reasons I chose the Maggies. In order to get what I wanted, I used the Ultra’s high pass filter and set it at 40 Hz with a gentle slope. For the sub, I used the Ultra’s low pass filter at 40 Hz with a steep slope. I now have everything I want as far as a music sub. If I would have gotten the Rythmik, I would cross them over the same way.