So, Chas and I concluded the initiative that I had outlined above.
To Paraphrase our communications ( hopefully accurately ) ;
He didn't like the Celestion drivers that I sent ( CDX1-1747 ) but did like the little Peerless drivers ( peerless dfm-2535r00-08 ) once a significant HF contour circuit was put in place ( 6.8uF cap strapped across the variable LPad ) .
The GPA 902-8a is still the king of the mountain ( though oddly enough , it hardly needs any HF contouring to satisfy Chas's listening requirements for HF or UHF sparkle ).
- Worth pointing out once again is that Chas's main speakers are JBL 4345's that are retrofitted with
TAD 2002 drivers ( + of course the
4345 has a dedicated UHF tweeter in the form of the 2405 ).
With all that
JBL/TAD backgrounding, it really puts the GPA 902 into rarefied company ( & by some measure , also pulls along the little Peerless into worthy contention ).
I'm pretty sure that our dearly departed
Great Altec Sceptic ( aka; Zilch ) would be quite bemused by these turn of events.