Andrew Jones. a former KEF employee, designed both the TAD and Pioneer branded speakers, so they are really a British design. Their 35mm diameter beryllium-dome tweeters is fascinating technology. The large surface area should give it a really smooth sound. That is a big reason Magneplanars and Quad electrostatic speakers sound so smooth,...large surface area.
My pet project is trying to get a Chinese company, or any company, to produce an affordable version of the Manger moving coil driven planar driver, which has a large surface area, like a dinner plate.
The US Manger distributor is selling the raw Manger drivers for $1,400. each! What a ripp-off! They are hand made in Germany. I believe they could be made for a fraction of the cost with high stiffness plastics and a better motor system. Wisdom Audio has a new moving coil motor system that when applied to 1" dome tweeters could allow them to be crossed over at 1,000 Hz or lower, and when applied to woofers would allow one woofer to do the work of 2 or 3 woofers. If applied to a Manger it could be out-of-sight great. I think they use a transformer to create a high intensity field around the voice coil and induce it to move without having a wire attached to the voice coil itself. I have written a half dozen companies about this and got positive interest from a Taipei based ribbon loudspeaker manufacturer. I think the Manger patient is long expired as it is 1970s technology.
For home builders cheap Mangers would make speaker design very easy. The Mangers are crossed over at 150Hz and produce a mellow point source that goes out to 30,000 Hz. You can mate them with dual 10" woofers or one 12" woofer for a full range design. They would make great wall speakers as well.
I suppose I could build my own speakers using Mangers, but I resist spending $1,400. for just one driver. They should cost $400. or less each, not $1,400. each.
Look at the ridiculous prices for audio equipment at the US dealers website...http://www.tmhaudio.com/pricing.htm
$2,800 for an interconnect? That is SICK. I do not want to do business with that guy. $49,000 for a preamp? Humm...
Who buys that stuff?