Wow, thanks Granteed, that is exactly what I needed. I always wanted to build a kit with passive radiators, and that price is much more affordable...
How would something like this sound? The plot looks very nice, almost exactly the same as my 7 cu ft. JL13.5 in 1/8 the box!
IN general, Shorting Ring Optimized and XBL^2 drivers should maintain their composure for a good bit of their rated throw, so within its
limits I can't imagine you being able to
reliably tell the difference between the two drivers themselves (it would have more to do with in-room frequency response and box tuning, and with those APR12 passive radiators you can mess with tuning on the fly). As long as the JL 13w1 has shorting rings i'd imagine they're more similar than not. If it doesn't, it's possible the distortion signature of the JL will make it a more "audible" subwoofer since our ears can hear distortion more readily than pure bass. I've never heard the w1s so i couldn't tell you.
The 13w1 tuned to 20hz in 7 cu ft, fed 350w, plus a 17hz 4th order filter (which is what it takes to hit its xmax of 13mm in that box) is realistically within two db of the Trio 12 tuned to 21hz fed 500w with an 18hz 3rd order high pass filter (which is what's built into the bash amp to my knowledge), so the limits are pretty similar too as far as I can tell.