Exactly. I use their frames, surrounds, and cones, as they have the only items that will support 5" of peak-to-peak travel.SI already uses Sundown frames. So a SI PR with a Sundown frame will already be the results were talking about.
I'm busy building more 24's for customers but I will be able to build a PR after Christmas. Speaking of which the HST-12 is finished. Here are a few pictures:
And here is the T/S list for the HST-12" D2:
Re: 4.2 Ohms
Fs: 15.9 Hz
Sd: 46698 mm^2
Vas: 46.8 L
Mms: 661.5 g
Xmax: 38mm one-way linear
Xmech: 50mm one-way
Pre-ordering should be open on both the HST-11 and HST-12 by early next week.