Has anyone here heard anything with the Strathearn drivers? Kinda a bit before my time. I've found some interesting info in US patent 4,156,801, sorta cool read for the planar dorks among us.
Anyone know if this ribbon takes the "most difficult to drive" award? 0.35 ohm nominal impedance (without the associated transformer box), I'd think that easily wins...
Some of the DIY amplifiers to drive this were pretty cool in and of themselves. Yes, direct drive a flat 0.35 impedance (250 Hz - 20kHz)
Anyways, seems one of the rare things that the interwebs never "rediscovered".