Agree on the Piega Coax series, just mind blowing sound quality, and also super coherent sounding. @Paul you might also want to check out Apogee, the company was bought 18 years ago by an enthusiast (Graz), he has all the original documents of how the speakers were made, etc. Long story short, they are selling new models (same names as the old, ie Apogee Scintilla, Apogee Full Range) via installers, the speakers have all new and improved construction, CNC machined drivers, options for transformers to up the speaker impedance and active driving via an external active analog crossover (which can be a Pass Labs XVR1, for example). The speakers have none of the problems the originals had. Check out “truesoundworksaudio.com” and “apogeeacoustics.com” An Apogee Full Range as described above, including the pure Class A Pass Labs XVR1 external active analog crossover would run at 30k, more or less. While it is a “niche of a niche”, it may be wise to check them out as a benchmark (and also the Piega models) and comparison to the PS upcoming Audio speaker line, as Apogee is the holy grail of planar/ribbon speakers.
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