Very High end Speakers Boenicke audio I'm afraid that title is very much misleading as there's nothing 'High-End' about them. TBH the drivers are average at best, although I do have the Peerless SLS 6.5 in a transmission line subwoofer enclosure, but there are better drivers than Peerless subs and Fountek fullrange.
I saw the W5 speakers going for $4,500 which is laughable becasue for well under $250, you could build a pair yourself. Spend over that and you start getting into Morel, Seas, Scanspeak Iluminator drivers or Revelator drivers, Eton drivers (which go into Avalon speakers) or Audiotechnology Flex Units (as used by Sonus Faber), and you'd really be in business. As for the crossovers, manufacturers are notoriously renowned focusing cheap and ill matching crossover components, even in speakers costing $10,000.
W5 Shopping list:
Peerless 830945 SLS 5.25" Woofer - https://www.madisoundspeakerstore.com/approx-5-woofers/peerless-830945-sls-5.25-woofer/
Fountek FE85 3" Full Range Speaker Driver - http://www.parts-express.com/fountek-fe85-3-full-range-speaker-driver--296-717
Speakerplans - Many people ready to help you with enclosure design, and many CNC services are available, just google it.
Crossover Designs - Parts-express forum and ask about crossover design.
As for simple but effect enclosure design (below)
Much as i love Peerless subs and Fountek full-range speakers that Boenicke use, I wouldn't put them up against the like of Hybrid Audio or Morel drivers or many other raw drivers.
Edited by captian73 - 5/19/15 at 11:58am