Originally Posted by bikegeek
Originally Posted by avpassion
Since you asked for specifics, I would very much like to see a stand mounted or floor-standing 2-way that uses a 15" SEOS, a compression driver with a beryllium diaphragm (or the new compression driver you mentioned recently) and an AE TD 15 woofer. I would like the cabinet and baffle to incorporate layering of complementary anti-resonant materials such as baltic birch ply and the phenolic material mentioned a few pages back. I suspect that even building a thick baffle using that material would have advantages.
I second the 15 inch woofer with a 15 inch waveguide and a really expensive and good compression driver.... full range tweaked to very nice mid bass punch...
Originally Posted by Donivan
+1 on making the best 2 way without being full range. I vote for TD15M (I'm sitting on 3 of these since I couldn't pass up on the CT and built those instead ) with either the fully loaded CD, radian with Be, BMS coax, etc.. Seos 15, 18 or even the 24. Also how about some 8 or 10" coaxial surrounds.
After building the Overnight Sensations for a local cafe (and all the praise they garner from non-audiophile customers) and knowing Jeff B's fondness for the AE drivers, I think having him design a SEOS15/TD15M would certainly raise more than a few eyebrows and have a few big boys running scared.
Some other considerations:
Solid birch enclosure
Rear mounting of the woofer
Isolating the waveguide from the woofer enclosure (or top mounting it)
Rear mounting of the waveguide integrating the baffle with the mouth
Utilizing wave-canceling enclosure geometry
As mentioned before, incorporate internal reflection damping materials inside the enclosure (roofing felt?)
Low crossover frequency (sub 1000Hz)
And of course, utilizing the the "fully loaded" compression driver with possible beryllium diaphragm
I imagine discussion of foam plugs is verboten
When I preordered the seos12 I was hoping for a more full-range solution to come out of this but have since come around to the HT way of thinking and am fine with a -3dB of 80Hz. That said, a sealed enclosure is still desireable to those of planning on running them full-range with a sealed enclosure's natural roll-off (and decreased group delay) and using bass management & subs for the sub-80Hz range.