Definitive Technology supercube reference

Discussion in 'Speakers' started by Joe Wilmore, Oct 30, 2003.

  1. Joe Wilmore

    Joe Wilmore Stunt Coordinator

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    Has anyone read the review in DVD Etc. regarding this subwoofer? The reviewer liked it better than the Velodyne HGS 18. I haven't heard of anyone purchasing one of these.
     
  2. Kevin C Brown

    Kevin C Brown Producer

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    I'd want to see distortion results first. People may argue as to the auditory effects of the servos in Velodyne subs, but less than 1-2% distortion is guarenteed. Some subs, at high SPLs and low freqs can get as bad as 40% THD.

    *Theoretically*, because of the 3 14" drivers (2 passive, 1 active), the Def Tech should be OK in this regard. But me, myself, and I, I'd still want to see actual measurements. [​IMG]
     
  3. Jay McC

    Jay McC Agent

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    Well, i can't really give you an opinion on the Supercube Reference because i bought the Supercube1 a couple of weeks before Definitive announced the Reference was available and the wife wasn't too keen on me returning it to get the Reference. "What's the point, the one we have is already too loud." was what she said. She just doesn't understand.

    Anyway, i love the sub and i read the review of the Reference and i have to say they are not exagerating. My Supercube1 plays low, loud, and smoothe without needing to be corner loaded. Its heavy, nice to look at, won't take up half the room. And comes with excellent customer service and a good warranty (3 count 'em 3 years on the electronics). And if Definitive's claims are true about the Reference sub having the output of 4 Supercube1s well, you do the math.
     
  4. Brian Bunge

    Brian Bunge Producer

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  5. Kevin C Brown

    Kevin C Brown Producer

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    Area, simple area. Of course, you need driver travel too, but 14" x 3 is a lot of area.
     
  6. Brian Bunge

    Brian Bunge Producer

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    Kevin,

    You really can't count the PR's in the total Sd or Vd of the system because the actual active driver and PR's don't work in a linear fashion. They're simply resonators, much like a port. As you approach the tuning point of the system the PR's work harder and the driver works less. Which means at higher frequencies the driver is working more and the PR's less. The biggest difference between PR's and ports is that you don't have compression issues with the PR's down around the tuning frequency like you would with ports. The downside to PR's in increased costs and somewhat higher group delay vs. ported systems.
     
  7. terence

    terence Supporting Actor

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    This sub is rated to go down below 11hz! Did DVD ETC comfirm this claim?


    [​IMG]

    The SuperCube® I & II have set new performance standards for high-output ultra-compact subwoofers. With the new SuperCube® Reference, Definitive sets new performance standards for subwoofers period! The Reference incorporates a 14" version of the 10" SuperCube® Technology driver pressure coupled to two 14" infrasonic radiators. All this is powered by an 1800-watt class D amplifier. The result is astounding high-definition bass performance extending effortlessly down below 11 Hz. Each SuperCube® Reference goes lower than and has dynamic impact and output capabilities almost equivalent to that of four SuperCube®I subwoofers combined. Slam, pace and rhythm are exemplary as is the ability to actually shake cement slab foundations. A complete complement of inputs and controls, including continuously variable level, high-pass, low-pass and phase controls, speaker and line level in and out, and LFE Direct in, are included on this surprisingly compact and stylish cube. The SuperCube® Reference will be available in piano-gloss black or golden cherry. Available Now!

    Specifications: 16.7"W x 16.7"D x 16.9"H Frequency Response: 11 Hz-200Hz Driver Complement: One 14" long-throw subwoofer coupled to two - 14" infrasonic radiators Built-in Amplifier: 1800 watts Digitally-Coupled Class D Amplifier Low Pass Crossover: 24 dB/octave continuously adjustable variable (40-150 Hz) plus Unfiltered LFE direct coupled input High Pass Crossover: 12dB/octave continuously variable (40 to 150hz) Speaker level: 6 dB octave (80 Hz) Finish: Piano gloss black or golden cherry Weight: 111 lbs. Suggested Retail: $1699
     
  8. Brian Bunge

    Brian Bunge Producer

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    It's not going to do 11Hz at any usable levels.
     
  9. Lewis Besze

    Lewis Besze Producer

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  10. terence

    terence Supporting Actor

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    Well fellas i was on another forum and read this guys post.

    By: Raistlin_HT

     
  11. Kevin C Brown

    Kevin C Brown Producer

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    Brian- Yes, I do agree with everything you said. And I also realize that 1 active plus 2 passive 14"-ers don't equal 3 active 14"-ers, but it's still a lot of (effective [​IMG] ) area! But that's also why I buffered my statement in terms of also wanting some distortion measurements to make sure the low freq extension they are getting is clean too. Do I believe that the Def Tech plays as low and as loud and with as low distortion as the SVS PB2-plus, for example, which has also been measured to 11 Hz? I don't know, not until I see some more numbers. [​IMG]
     
  12. Lewis Besze

    Lewis Besze Producer

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  13. Brian Bunge

    Brian Bunge Producer

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    Kevin, so basically we're saying the same thing. Gotcha. [​IMG]

    As to the Def Tech having output to 11Hz, hell, I've measured 78dB at 10Hz with my Tumult from the listening position. Now ask me if I hear anything.[​IMG]
     
  14. terence

    terence Supporting Actor

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  15. Michael R Price

    Michael R Price Screenwriter

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    Now if a Tumult only goes to 78db at 10Hz, how loud can a Supercube go then? (Wait, was that a PR or sealed Tumult?)

    My friend got interesting results with his huge Shiva subwoofer tuned to 11Hz... in a tiny room. It sounds awe-inspiring. The only problem is port noise.
     
  16. Brian Bunge

    Brian Bunge Producer

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    Michael,

    This is a sealed Tumult (53L) with an LT circuit and 800W of power. And this was not max SPL either. Other than a huge room mode at 45Hz, about a 92-93dB, the reponse was pretty much within + 5dB all the way out to 10Hz. And that's without hooking up my BFD yet.
     
  17. Lewis Besze

    Lewis Besze Producer

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  18. Kevin C Brown

    Kevin C Brown Producer

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    Brian- Yeah, I just wasn't explicit enough. [​IMG] I have a Vandersteen V2W, and I've measured it in my room flat to 21 Hz, and it's -6 dB at 20 Hz. So that's my curiousity in the new Def Tech (and the PB2+). Potentially looking at the "next" one that will go to 15 Hz or lower. I've had Def Tech mains in the past (liked them), but to be honest, they are *not* a company that I'd associate with low distortion, low freq, high output subs. Will be good to see more on this guy.

    Lewis- The dude in DVD Etc just kind of talks about the measurements he did. What the heck, I'll put it here just so people will go out and buy their own copy of DVD Etc to see the rest of the review. [​IMG] (Some paraphrasing...)

     
  19. Brian Bunge

    Brian Bunge Producer

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    The Def Tech would never even be on my list if I were looking for a sub. I've always felt their specs were very generous to say the least. That and the fact that I'm not into the contemporary, gloss black finish would never allow it in my living room.
     
  20. Michael R Price

    Michael R Price Screenwriter

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    Wait, "audible output" at 12-15Hz? I've listened to a clean 12Hz tone, and it is not in any way "audible." That means...
     

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