Velodyne DD Plus: New King of the Jungle?


I've had the new Velodyne DD15 Plus now for about a week. I've had and heard plenty of subs, always looking for that magical moment where you are immersed in the music in its fullest range, uninterrupted by separation and unwanted resonances. Subs are difficult to judge; it depends on how well their sound can be blended with the system in use. And there's always that artificiality of tone the listener is fearing to detect, so my expectations were tamed as I set the thing up. My gear is simple, some of it is not the finest in the world but performs amazingly well for what it is, and I've heard lots.

I set it up on a stool about 8 inches off the floor, with plenty of padding to isolate it from the wooden floor(I'm funny about isolating stuff from wooden floors but it seems to sound better). It was placed diagonally, near a corner of the room. I put on some Diana Krall and roughed dialed it in. I have to say that right out of the box, not broken in and not EQ'd yet, the DD15 Plus and walls of my listening room just disappeared and left me with my jaw in my drink. I was in the concert hall with her. This sub just may be in a league of its own.

About an hour later, my wife came home. I was playing some Allman Brothers and upon walking in she exclaimed, "Something's different; did you get something new?" I was dumbfounded. Luckily it was covered up and in the same place the old one was so she didn't see it. "What Do you mean?" I mumbled. Later I confessed to her about the purchase. When asked about the sound, she said that when she walked in (45 feet from the sub), the whole house had "an atmosphere" to it and she thought "there was a live band in the living room". Now that's music to my ears!

Even as it was with the factory settings, it would have been good enough. But of course I ran the auto EQ with the microphone, video connection to my TV played the tone sweep CD it came with.

With one push of a button on the remote the DD15 plus began listening to and adjusting itself. Five minutes later it had analyzed my main speaker's low frequency output and matched their cutoff to its own, set its low level output and frequency responses to the contours of my room, set its crossover parameters, phase and parametric filters. The result was a very flat response line across the range on my TV screen. The crossover points were showing up as little dips, varying no more than -3db. It started rolling off gradually around 160db. I could have gone further with fine tuning the EQ manually but didn't need to.

Back to Diana Krall. Same effect only this time, the whole experience was smoother and more seamless. I realized its not only that the DD Plus gets completely out of the way, but it has a very organic and natural * tonality *; significantly more "real" IMHO than any other sub I've heard. I played some rock, blues, jazz and samba with the same effect. We have an extremely versatile sub here.

I'm using it for music in my stereo system so I don't need that much power. This is way overkill. However, I did play a DVD (Wall-E) on the surround system with it in place and again, it made the room disappear and put me right there in the action, everything not being lifted out but rather enhanced with detail I've never heard before. I felt like this sub could take me anywhere sonically. And the kicker is that the volume was at about 25% of its 3000 watt capacity.

I'm running Harbeth Super HL5's and they're extremely fast, detailed speakers with tons of naturalness. The DD15 Plus kept up and possibly exceeded them in velocity. For fun, I set the crossover on the sub to its highest point (200hz) and adjusted the volume. The instruments timbre and tonality were filled in with more detail and their stage presence more placed. Wow! This is one fast sub, full of natural tonality, detail and can put you right there in the musical event.

I can't wait until it breaks in -

I look forward to other fellow AG'ers who have far more experience, different gear, more brains and better ears than I do to give their opinions on this amazing piece.

Cheers,

Sonicray

Gear:
Odyssey Extreme SE monoblock amps
Odyssey Candela tube preamp with Mullard ecc82 long plates
Harbeth Super HL5 main speakers
Velodyne DD15 Plus sub
all IC's and cables custom made UP silver over OFC
custom 12 gauge pure copper wiring from meter
customized and treated listening room

Resources:
David Weinhart, Weinhart Design, LA
Klaus Bunge Odyssey Audio
Alan Shaw, Harbeth Loudspeakers, UK

All are IMO, among the very best in the business and phenomenal to deal with.

sonicray
That this Velo can keep up with and enhance the openness of the Magnepan 3.7's and the other speakers mentioned in this thread says a lot about its velocity, cone / cabinet resonance and dynamics. I'm running my DD15+ with Dynaudio C1's right now and it keeps up with them. Or are the C1's trying to keep up with the Velo?) a very fast sub here.

I run the C1's by themselves and they are very pure and natural with very present base. Very deep, realistic soundstage. Then, I do the crazy thing of setting the crossover all the way up to 200hz on the Velo and setting the volume very low (2 to 6 for jazz and 6-12 for rock) and whaalaaa, the soundstage opens up and every aspect of the instruments / vocals / air is enhanced. Try this technique and let me know if its just me or does this happen in your set up as well.

Some ramblings: Now I want to try two DD12+'s in my room! Overkill? Certainly. Crazy? Never!!! I too believe 2 subs are better in a good listening room. My room has five walls, an open entry way, a strangely vaulted ceiling, very thick walls and floor and every component is suspended on foam layers. What does all that do? Something, I'm sure. This upgradeitis can become dilusional. Not knowing if there is something that sounds better is a fun thing and drives us. The biggest hurdle for me is telling my wife, "Yes dear, those have always been there" and getting away with it. Once I actually covered a new sub with a table cloth and told her it was a new side table, placing a lamp, etc on it. That worked for a couple of weeks. I don't want to talk about what happened next though.
You can get a smoother response in room using multiple subwoofers. Or one bass horn. So more than 2 is fine wont crumble your room break your windows but it will smooth out peaks and even response.
Yes two is the way to go. Just put a nice cloth tabletop on top of the second and tell your wife it is a new end table that happens to do double duty as sub.
Yea, the lamp table design is the way to go, which could explain the wires coming out of the back. I might make a removable cover for the cone so if she lifts up the cloth she won't see anyting.
11-06-11: Irvrobinson
So, Johnk, just curious, what in music generates such bass pressures? I was just at the symphony last night, and it is remarkable how little bass a symphony orchestra generates during a typical program.
Maybe your seat wasn't the best location to catch all the bass. ;) I go to the symphony several times a year and how well I hear the bass sometimes depends on where I sit. There's certainly more bass if you're seated closer to a wall. Then there's the auditorium acoustics (acoustics at Seattle's Benaroya Hall are excellent!) and the program itself. I favor big bombastic orchestral pieces and Holst's "The Planets" makes use of the full percussion section plus pipe organ. There's *plenty* of sub-30 Hz activity going on there. I'm a percussionist, and the 60" dia. concert bass drum has a very low fundamental. Piano goes down to 27 Hz and the contrabassoon goes down to just a half step above that. Let's not forget tympani either.

Think about what great subs would do for Stravinsky, Rimsky-Korsakov, Host, Elgar, Shostakovich, Respighi, Debussy, Ravel, and Moussorgsky! Yes, there's plenty of sub-40 Hz energy going on in a live classical concert.

One thing I noticed about a live orchestral concert is the way the air in the hall is energized. The whole venue feels alive, and that seems to be the big plus with these super subs--they energize the entire space in a way similar to a live concert--something that a stereo pair of speakers very seldom does.