Several years?but can they do the same technology just like Velodyne or Sunfire or even JL Audio?
As i notice,mostly huge sub their frequency are quite low.
But can you imagine that a small size sub just like DD10 & DD12 can go that low also?
In terms of Velodyne technology I already been amazed!
SVS?yes i know you are trying to convinced me to test SVS.
But their HUGE size is already a good reason that I won;t choose SVS.
Oppsss.maybe i just keep quite just to avoid being boooooo by all SVS dude for trying to destroy their business here..
Im sorry if I make you all guys angry.
But every people taste is different..
Just my point of view

bro i think jchong is just trying to let u know there are subs out there that are cheaper n might also be better than velodyne.. he just trying to convince u to keep your mind open.. we may sound like svs fan boys coz the only non mainstream subs widely available here is svs.. so we always use svs as an example of better value subwooders.. jchong is not even a svs user... i know the size is too big for u .. but y not just try it n see what u r missing.. u got nothing to lose.. these fridge like subs do go low but it doesnt mean they produce rubbish in the other frequencies.. anyway just keep in mind that velo or sunfire or jl are great subs but might not have the best performance bcoz of their size.. but for 'non fridge like' subs they should be among the best...
oh 1 more thing maybe u should wait for the new DD. It was sitting on top of craigsub's ranking list.. and now it has dropped to 7th.. i think it does show in a way that the old DD is aging. Happy sub hunting!!