Quote:
Originally Posted by jazzhead
Hard to believe that the Bird 1.5 is wired with Prime , when the higher Coltrane with No.1 . I consulted Leif about the change to Prime in my Coltrane2 from No.1 and he mentioned it to be be a worthwhile upgrade . As it is factory installed , they must be tweaking the x-over if need be to optimise . It is a 10k move , so am sure there will be no half measures .
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Bird 1.5 was a developmental model while designing the Bird 2. The Jorma Prime internal wire was a custom upgrade and is definitely not standard.
The 10k move is most likely pure wiring cost. The crossover would definitely need to be tweaked to compensate for any frequency anomalies so probably it is best to confirm with Leif on that 
Jorma No.1 was basically the same as Jorma No.2 but with Bybees in the signal path. With Jorma No.1 discontinued, we now have the Jorma Unity which takes its place.
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Analog: Ear Discmaster, Redpoint Model D, VPI TNT 6 Hot Rod, Townshend Rock 7, EAR 324, VDH Grasshopper III GLA, Dynavector XV-1T, Dynavector XV-1S, Jorma Prime/Origo, Jan Allaerts, Einstein Turntables Choice, Digital: EAR Acute IV / Dac IV Preamp: EAR 912, Ray Samuels B-52 Amplifiers: EAR 890 Monoblocks, Concert Fidelity ZL-120V2SE, Almarro 318B Accessories: Stillpoints ESS Rack, Sistrum, KS Emotion Cables Speakers: Marten Coltrane Tenor
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