onplane Posted November 22, 2016 Report Share Posted November 22, 2016 A few weeks back we had a very, very interesting thread titled "Ported vs Sealed" where some terrific information was shared. Somewhere (and I can't remember where) I mentioned that Velodyne, a highly respected manufacturer of sub-woofers, was still selling "sealed box" units. In fact, their top of the line units are all sealed boxes! http://velodyneacoustics.com/subwoofers/digital-drive-plus-series.html/ This got me thinking that there must be a reason for this, so I sent this memo off to Velodyne: Question: As an audiophile for many years, I have a very simple question. Your top of the line Direct Digital Subwoofers are all sealed boxes. My question is: why sealed boxes? For many years after AR introduced "acoustic suspension", the best speakers were all sealed boxes. Today with computer aided design, the vast majority of speaker systems are vented/ported. Indeed, you folks market a number of vented subs. So why sealed boxes on your best subs? My guess is distortion. That is, the simpler AS front propagating wave is less prone to distortion than the mixing which has to occur with the vented systems. Today I wanted to share Velodyne's response, because I think it is most interesting: Your guesses are part of the reasoning. The sealed boxes are also able to be more compact than a ported cabinet would be and these units have a wide range of applications. In truth there is no solid reason for one system to be 100% better than another as far as I am aware. I would not be surprised if later down the line the next model to come out has ported and non-ported options to suit the clients preferences. For the DD line keeping the bulk of the cabinet low was the deciding factor in the model run, but the engineers did get as many advantages out of the system as they could with that choice. Thank you, Velodyne Customer Service In short, I guess there is room in the world for diversity of design with no system "100% better than another". Hope you find this interesting ... Jerry Link to comment Share on other sites More sharing options...
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