Originally Posted by albatros43
Cool video, but I don't understand the lack of excursion. The V3601 should play around 125 dB from 15-25 Hz (up 3 dB from the V3600) and the T18HT is "only" rated at 118.1 dB from 16-25 Hz. Add to that the sealed system and I really don't get it. Maybe it's playing way below 16 Hz, but even so, there should be lots of excursion. Maybe the volume was much higher in the V3601 video?
I'd imagine it's partly because he has so much headroom, that there's simply not much excursion needed to meet a -6 playback level in his room with twelve 18" drivers; and the T18 driver is all about sensitivity and less about xmax. Also, he has quite a bit of room gain below 20Hz. The new 01' drivers were designed with a lot more excursion for added deep bass output, but they're an entirely different animal.
Speakers: PSA (MT-110 x2, MTM-210C, MT-110SR x2); SVS Satellite x4
Subs: PSA V1801 x2 & V1800 x2, B1200D x2
Actuators: Crowson Tech Shadow-8 x2
Processing/EQ: Denon X4200, MiniDSP HD x2, NU6000DSP