I originally purchased two of the Epique E150HE-44 drivers for use in a set of small tower speakers I’m going to be working on at some point in the future. After running some test sweeps through it and taking another good look at just how small this thing is, I started wondering how this would do in a small box. Vent size is going to be an issue for any implementation that would take close to full advantage of this drivers massive Xmax, so I started looking at passive radiators.

The Dayton Designer series PR (8” paper cone) seems to work well with this in theory in a very small box. In fact, this is about as small of a box as you could do… the driver magnet and PR frame are within ½” or so. I'm using two of the PR's on either side with 120 Grams added to each.

I’m hoping to have driver recesses done in a few days and then finish applied after that. This will have no built-in amplifier, there simply isn’t room for one in the enclosure. This is a 10” cube. I used 1/8” HDF panels glued up to make the six ½” panels, and the edges were mitered for the largest surface area glue joint without using splines.

I also added a 7” disc 3/8” thick behind where the driver will go for added depth as that will be recessed – and the Epique subwoofer has a thick flange – around ¼” thick or so.

Here are a few graphs to look at. The F3 is around 37 Hz or so. The BassBox screen is just to show what the size in Liters equals to in inches and the size of the cabinet...

I'm excited to see this finished and here what this little monster of a subwoofer is capable of. It looks promising, at least on paper (or computer screen)
Not revealing everything yet, not that it's any big secret... anyone can model it. I'm just trying to save a bit of impact for the YT video when I get this done in a week or so (hopefully)
For a size comparison, the little black subwoofer in my signature is also a 10" cube.
The feet in the pic are just short pieces of 2" ABS tubing. I kind of like the squat look that it gives with those.
More to come in the next week or so hopefully!
TomZ
The Dayton Designer series PR (8” paper cone) seems to work well with this in theory in a very small box. In fact, this is about as small of a box as you could do… the driver magnet and PR frame are within ½” or so. I'm using two of the PR's on either side with 120 Grams added to each.
I’m hoping to have driver recesses done in a few days and then finish applied after that. This will have no built-in amplifier, there simply isn’t room for one in the enclosure. This is a 10” cube. I used 1/8” HDF panels glued up to make the six ½” panels, and the edges were mitered for the largest surface area glue joint without using splines.
I also added a 7” disc 3/8” thick behind where the driver will go for added depth as that will be recessed – and the Epique subwoofer has a thick flange – around ¼” thick or so.
Here are a few graphs to look at. The F3 is around 37 Hz or so. The BassBox screen is just to show what the size in Liters equals to in inches and the size of the cabinet...
I'm excited to see this finished and here what this little monster of a subwoofer is capable of. It looks promising, at least on paper (or computer screen)
Not revealing everything yet, not that it's any big secret... anyone can model it. I'm just trying to save a bit of impact for the YT video when I get this done in a week or so (hopefully)
For a size comparison, the little black subwoofer in my signature is also a 10" cube.
The feet in the pic are just short pieces of 2" ABS tubing. I kind of like the squat look that it gives with those.
More to come in the next week or so hopefully!
TomZ
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