Hi Bob
Yes, they are all flat faced foam filled drivers, with foam covers to make what appears to be a coneless and flat looking driver in all but their tweets. PT was the first to do something special with a soft dome tweet years and years ago. Remember?
My PC 6.5s are 30 years old. well the wood is older I'm sure, but the working parts on them 'were' over 30 until I had them entirely replaced along with their x overs a couple 3 years ago including the grills too.... the big 'uns, PC 10.5, will also receive that treatment soon enough.
I've only read of the DART system in J.A.'s rag... I've not heard them myself. Given the attention PT has to time and phase coherency in their previous offerings I'm sure it's a truly remarkable system... and it should be if virtually everyone in the room can be sitting in the sweet spot simultaneously with all in wall drivers too! Of course theyre also using active electronic compensation, but still, thats gotta be sharp.
.... I didn't have enough dough left to swing that ticket or I sure would have gotten up to Jaxville or somewhere and checked it out. Oil well.
I'm stuck doing things the usual way... over think... over spend... and wind up over the edge... that's the bleeding edge of course. The one Where There Will Be Blood. For all the money, sweat, and tears have been spent long ago and only blood remains. Its only a rumble, stumble and fall, past the "leading edge" however. ;-)
I believe I'm gonna get one of them HSU subs. The STF 2 for the bedroom. SVS likewise sub (PB 10NSD) has no high or low pass filters... only gain & phase controls, AND IS $110 more.
Depending on how this HSU does it's upscale sibling, the Hsu VTF 2 (in it's new adornment coming out in a few weeks) might well join the main HT system as support for the rear ch. Silverline SR 15s
or perhaps just another STF2 unit.
The comparable SVS PB 12 PLUS unit = one more STF2 in cost above the HSU VTF 2... or $400.00 additional, nearing $1100 vs the HSU VTF2s $600.00 shipped cost.... but then that's a "we'll see" thing too.
Performance & wallet thickness will dictate that solution.
Given the under $400 ticket price delivered for a 'new' STF2, I feel that's a decent enough move for the time being.
I guess I'm about 100% "sub-figured" out for the time being now on a Bedroom woofing replacement.
Wouldn't ya know it? The Velodyne last night played without a hitch and this afternoon too! Super. Just super. :-((
Oil well.
Thanks much. Everybody.