Anyone familiar with the Manger driver?

OK, This is an update on my MANGER adventures.

I've put my money where my mouth is. It will take a number of weeks for me to actually get my hands on the pair I found, but the ball is rolling. I'll post specifics of the construction of test boxes, and choice of vintage piston drivers that may be a good demonstration of "bad cones". Then will follow details on the testing protocol for waveform fidelity. I plan to use an arbitrary waveform generator making music-like percussive impulses. Departures from ideal decay profiles as provided by the generator will be considered distortion that is added by the driver based on available damping factor, modified with series impedance added inline with the drivers. I may try to use several "full range" drivers to avoid loading effects of passive filter networks. Later, I will use this same setup to test for gamma (Bl/Mms(d))requirements in subwoofer drivers.

Stay tuned!

I hope you test on open baffle and measure below or at 30ms.
Of course, without interpolating passive components. Since you're using a generator, limit the bandwidth if necessary.

What a gorgeous thread to join for I´ve been playing my Manger 103 Zerobox for many years now driven by tube amps.
My ears feel content so far, let´s wait and see what the instruments at the svoboda labs will find out.

I have been playing the manger drivers in a pair of Medea's, they need time to break in, took over a ytwo years, and theyy also need fast amps, as well as powerful one's, they are reasonably efficient, but seem to really thrive on power.

The Audio Physic Medea speakers were at the heart of the single most awesome moment I've ever had in the high-end hobby.
I was privileged to hear them at Immedia in Berkeley some seven years ago. They were utterly compelling, "hors classe" in a way that I've never heard a cone-driver speaker (or horn, or planar, etc.) even approximate.
The system backing the speakers, ohhh let me think - monoblock amps by SiriuS, the company that is now GamuT. The preamp was a Connoisseur Definitions v2, and LPs were spun on an Immedia "Revolution" turntable, of which too few were made. I was on the list for one such before I experienced a cash-flow discontinuity....
Wonderful speakers. Beyond my means then and now. But they are ranked among the very few products, audio or otherwise, that I wish I'd made the extra effort to know better.
Much like that girl who I really should have kissed when I was seventeen.

More wine, waiter!

cheers apo