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
I'm sitting here listening to a newly installed DD18+ with Revel Salon2 mains. I thought the Salon2s had pretty good bass... well, with the DD18+ it's a whole new universe, and this universe has has absolutely compelling, seamlessly blended bass. And when called for, like on Tracy Chapman's Fast Car, well, I didn't know bass performance was possible like this in a home. Amazing. Beyond amazing.

The store I bought it from hadn't sold a DD18+ yet, only DD15+s. The sales guy that delivered it and helped me set it up in my room was so taken by the sound he spent an extra hour listening with me. He didn't offer to move from the sweet spot either. ;)

What a subwoofer. I'm pretty jaded, but this is pretty special product. Sonicray's pushed me into trying it. I hadn't been completely happy with the bass in my room, but I've been postponing doing anything about it. The Salon2s alone aren't exactly slumming it. All I can is thanks, Sonicray.
Well said, Irvrobinson. I love my DD15+. I was surprised at how seamless it blends into mains and into room. I was shocked at how it provides not just a low end foundation but the big impact is it opens up the mids/highs/soundstage and space. I just wish I had bought to DD10+ versus one DD15+
I will stick with my 800lb bass horn think it could dissolve a little dd15 with its tremendous bass pressures. 4 DD 15 would make nice feet for it to sit on ;)
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. Even in rock and roll, a DD15+ can approximate the bass output of a 22" kick drum; certainly two DD15+s can do it. 18" PA subwoofers are typically -3db at 32Hz, so even live synth or bass isn't getting you to 800lb bass horn territory. Did you build it for movie special effects?
I use it mostly for music but also movies gaming etc. You would be surprised at the bass pressures just a venue has the large space all the movement etc generate infra sonics this pressure gives us the excitement of a live venue why the wee hairs stand up. This my bass horn does with ease it also has massive SPL capabilities with out strain its never force like a conventional design does. Most conventional subwoofers have massive driver excursions need massive power this reduces transient response and increases thermo compression the bass horn doesn't suffer from these design issues. It doesn't use 18in PA drivers as you think but 4 custom built 15in just for use in bass horn. It is similar to a design I use to replicate explosion etc for military training but a bit up-sized since I'm crazy. I have owned and built the best in subbass and nothing is close to a proper bass horn though most will never see or hear one so live on compromised subwoofer design. For that's all most will ever experience. And its probably good enough for most hobbyists bass horns are to large for most home systems.