Pleiades Crossover finetuning with a variable inductor

At your risl. As on previous posts, an inductor in parallel with a capacitor is in series between amplifier and woofer-fullrange drive unit which is hung on air without baffle. The inductaor takes away the mid heaviness leaving the bass and the capacitor supplies the high frequency music content. Music source is Careless Whisper - Wham from Wham's last CD. The Sony Walkman has two outputs one for headphones where Sennheiser HD580 are connected for reference and direct comparison. Second output is line output where Pleiades 2N3053 single transistor class A power amplifier with output transformer and no negative feedback is connected feeding the Pleiades crossover. The air core inductor is 1.07mH. Capacistor from yesterday's listening tests directly comparing with HD580 changed to 1 microfarad. and results were impressive, sound closer to HD580 than other cabinet speakers in Pleiades lab as they sounded more bass and treble heavy than HD580. That there was still a bit mid heaviness. Remembering Mr. Yiannis from Elina, his crossover with iron screw inside by accident, it was decided to gradualy insert a screwdriver inside the air core inductor in order to make it a variable inductor , increasing inductance to cut more mids, while listening in real time! It worked remarkable well. George Michael's voice sounds as natural, very close to HD580. Inductance measured by the bridge is 1.7 Henries. Actually it just happened that the air core hole is facing the ceiling and the screw driver is inserted until the floor were the air core stands, so the screwdriver stands supported by the air core.