HSU-VTF-15H Subwoofer vs rythmic15HP vs velodyne optima 12

I would personally take a FV15HP over the VTF-15H but there's a fair bit of price between those two subs.

I own the 15H so I can tell you that it's a great sub. The Rythmik has a great many fans around here also. I'd say you can't go wrong with either one of those. In a room that size, I'd want dual subs though. I don't know much about the Velodyne.

What does the budget look like?

I bought a Rythmik FV15HP about two weeks ago and am in love with it. Currently I have it in a 1300 ft^3 room and it has no issues what so ever pressurizng it. Hopefully in a year or so I will be able to add a second, but that is mainly to smoother FR.

I can't speak for the others so can't help you out there, but I say if you have the extra money to spend you should give the Rythmik a shot.

Are you asking about the Velodyne Optimum 12? Sorry I'm not to familiar with Velodyne subs.
But without even looking at the numbers it would probably have a hard time keeping up with the FV15HP, of course I'm basing this off of the Velodyne DD18+ numbers from the data-bass.com numbers. In the 20 to 31.5hz range the FV15HP puts out 117dB, and the DD18+ only hits 113dB, so I believe you would almost need two of the Velodyne DD18+ to equal one FV15HP. I could be way off but I can't find the Velodyne you're talking about on their webpage.

I don't think any of the subs would have a problem with that sized room. I personally would take the Hsu or Ryhtmik sub over the Velodyne as you typically get more bang for your buck.

It really comes down to budget.

Why do you say that?

I personally like the variable tuning aspect of the VTF-15H. It allows you to configure and tune the subwoofer very easily based on your listening preferences (1 port open for max extension, 2 ports open for max output, two ports closed for sealed mode, along with changing the "Q" tuning of the sub with a simple dial).

The Velodyne has built in EQ which is nice though, but there are EQ options out there (such as Audyssey which you may already have built into your receiver) or something like an antimode or minidsp.

My 2 cents is no.

I'd take the Hsu or Rythmic first. I took dual Hsu 15Hs for my 4500^3 room fyi.

The Rythmik servo design outperformed a much higher priced (DD-series) Velodyne when I tried them a couple of years ago. I have not heard a Hsu for far too long to make any comment. The Rythmik includes various crossover switches/controls, phase control, damping control, rumble filter, limiter, and a one-band equalizer all built-in so it is pretty flexible.

Have not listened to too much music on my FV15HP, but the little I did sounded great. Nice tight and fast. TBH I have not heard double bass kicks sound this good since the old sealed system I used to have in my car.

I use my VTF-15H for 50/50 movies and music and can say it does an excellent job of both.