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ultimax 18" subwoofer
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  1. DIY Speakers and Subs
    Greetings! I just built two mini-marty GSG cabinets for a pair of Dayton UM18-22s. Each UM18 will be powered by a Crown XLS2500 (bridged). The room is roughly 560sqft and will be used for music, movies, board games, etc. As for the rest of the system, I'm running a pair of NHT 3.3s for mains...
  2. DIY Speakers and Subs
    I am trying to decide what driver to use for an 18” sealed subwoofer for the family room in our new house. Though it is a very big room, it’s a shared space, and a sealed 18 at ~4cf is probably more than I should even try to get away with. I have Fusion-8s as my LR (no center) and love them...
  3. Audio Gear
    FS: 2 x 18" Ultimax Subwoofer(Sold) and Behringer NX6000D all for $1350 Hi, Selling 2 x 18" Ultimax Subwoofer, only 6 months old too big for my HT room, going with smaller form factor subwoofer, both are in excellent condition, Might need one coat of duratex paint, I built them with...
  4. DIY Speakers and Subs
    I've had four UM18-22 Ultimax subs sitting on my shelf just waiting for the day to come when I would build them proper enclosures for my dedicated theater. Well, that time has finally come. I was originally thinking of just going with a full marty design, but didn't want the port firing into the...
  5. DIY Speakers and Subs
    As has been stated in several posts online already, the Ultimax 18 sub can be squeezed into the Parts Express 4 cu ft flat pack box cutout for the 18" Dayton Audio Reference Series Sub. It's a bit tight and needs to be expanded just slightly. In case anyone is not getting the Ultimax 18 because...
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