Heard them - loved the sound, hated the look!
I've had the luck to experience them twice and Metralla is right - soooo good. Just an effortless, rich, presentation at all volumes. The last time I heard them was a few years ago at The Show in Los Angeles. The Cogents were driven by Ron Welborne's Terraplane 300B or 45 monoblocks. Far too small a room for those monsters, but still sounded good.
Bet they've come a long way since them.
Utterly effortless sound - the Cogents impressed me a great deal. The Cogent room has been one of my favorite rooms at several audio shows over the past few years. I would say that some of the horns they've used have been better than others, but that effortlessness is there consistently so that's probably the driver.
Classic Audio Reproductions showed with a smaller field-coil driver at T.H.E. Show in January of this year, and I thought they had one of the two best rooms at T.H.E. show, along with Sonicweld (I don't think Cogent was there).
Macro, any chance you might make it to RMAF in a few weeks? If so, I'll be in the top of the tower (room 1100) - come on by! No field coil drivers, but it would be good to meet you.
Duke - Which horns did you feel worked best? I'm very interested in Bill Woods Acoustic Horn AH 300 wooden horns.
The field coil option may be too expensive for me. Do you know what Cogent charges for theirs? If I can't afford the field coils I'm thinking about a 2 inch vintage JBL instead.
Last year I was in Denver buying a car on the weekend of RMAF and didn't bother to check in. Maybe this year will be different. If I come to the show, I'll look you up.
Macro, I liked 'em with Bill's horns the best. It was in a huge room at RMAF last year, and it sounded like there was a band up there playing. A pretty good one, too.
I don't know what Cogent charges for their drivers. You might try contacting Steve Schell or Rich Dreysdale, they post on Audio Asylum's high efficiency speakers page sometimes.
At present I plan to use the woofer and cabinet from my JBL L-200 speakers. I will bypass the XO and horn in the JBLs and mount an ah300 wooden horn on top. Thinking of using a 2 inch coax driver. Crossover from the woofer would be around 450 HZ. Bill has agreed to build my crossovers for me for a fee.
Overall frequency response should be 40Hz. to 16Khz. This approach allows for an upgrade path as money becomes available.