Home Theater Forum and Systems banner


  1. what to do with my PRs

    Ported Subwoofer Build Projects
    Hi All: I have (4) AE PR15-700. I bought them a few years back to do a passive radiator design with Tempest X drivers. I ended up doing a sealed cube and a large sonosub. I've moved one of Tempest into a 20" id" poly cylinder so I could use it outside and not worry about the enclosure...
  2. Calculating an enclosure with PRs

    DIY Subwoofers - General Discussion
    I am trying to calculate an enclosure using one or two PRs. I am using WinISD but it gives me an error and tells me it can not calculate this box. Does anyone have any pointers on this? I am using the following: Eclipse SW9122 Re = 6.2342 ohms Fs = 38.5112 Hz Zmax = 98.0958 ohms Qes = 0.6023...
  3. Triangular, corner shaped, 1 driver w/ 2 PRs.

    Ported Subwoofer Build Projects
    First, I'd just like to express my guilt for jumping right in to asking for help and asking questions with out really contributing anything. Im a cable tech so if anyone has any questions about running coax, splitter configurations, amplifiers or anything related to dealing with a cable company...
  4. IXL 18 and PRs

    DIY Subwoofers - General Discussion
    Was looking at CSS and saw the PRs, and tossing the idea of a 18 " IXL and dual PRs, wondering what size box I can get away with and would the 1600 or 2100 grams work best? Was just thinking I can keep it relatively small if I use PRs over an LLT, as I "can" squeeze and LLT but I lack tools and...
  5. Puzzled about PRs

    DIY Subwoofers - General Discussion
    Several threads have been about passive radiators and I was wondering how the amount of weight on the PR affects the response time of the individual PR. Also, since the PR is going into the box when the active driver is pushing out of the box and vise-versa, isn't the contribution to the SPL out...