The Pleiades Crossover, Inductor value bridge measurment

At your risk. The Pleiades crossover is an inductor in parallel with a capacitor between amplifier and single speaker drive unit. Its purpose is to equalize the single drive unit (a woofer or a woofer fulltange) in order that it sounds correct without the addition of any other drive unit, without a cabinet, without even a baffle, just the drive unit hung on air. See previous posts. The first experiment had an inductor of 0.9mH, Q=0.8 and a 2.2uF capacitor. Since Big in Japan - Alphaville was unsed for the listening tests with the Pleiades 2N3053 single transistor class A power amplifier and there was still some midrange empphasis on the singer voice even after adding the capacitor, L was increased to 2mH with better results resembling listening to the sennheiser Hd580 headphones with a bit less bass of course since there is no baffle or cabinet. Other nice combination is 3mH and 1mF which sounded nice on Careless Whisper - George Michael. other nice combination used today is 1.07mH (Q=3) air inductor (previous experiment was with iron core transformer like inductor) and 1uF MKT Philips orange capacitor as on previous experiments. Obviously measurments should be made on anechoic or open air enivirinment.