Due to space limitations and set up flexibility I decided to check out the Hsu ULS-15 subwoofer.
My Dual SVS subs (PB Ultra/2 and Plus/2) are just too large to fit in my new HT space and since I was familiar with HSU having previously owned an Outlaw Audio LFM-1, I decided to check them out.
Boy am I glad I did. These subs sound terrific. Granted they do not have as much SPL as two SVS behemoths with dual 12" drivers but they more than make up for it in the depth ( and they go deep- they are flat to as low as my SMS-1 screen goes) and quality of the bass provided - smooooth, quick and responsive with plenty of HT slam depending upon the room size starting with the Dual drive set up. I decided on the Quad to even out my bass response and to give me the extra slam I am addicted to although the Dual drive was probably more than adequate in my room. (I am spoiled. So sue me.):D
As it stands now I have only 3 set up as the fourth arrives tomorrow. They are banging. The Incredible Hulk Blu Ray almost brought down my house.
I expect with the arrival of the fourth to have a broadened sweet spot and to lower the gains a bit on all four ( right now the 3 are set at half).
Anyway I can't imagine going back to ported now. The ULS-15 is a very nice sub.
ULS-15 Quad Drive