B&W itself did "downgrade" from Supreme Silver Gold to an "inedited" Supreme Oil, without silver, and the general consensus is the 803 D2 sounds much better in the treble range than the D, much smoother (and still not enough...maybe the problem is Mundorf?).
I don’t know if replacing a silver cap with another silver cap, but with oil, is worth the money an the work; @dhl93449 please, I ask you to tell me the changes you had in hf so I can have some elements to make my decision easier (better to say less hard).
@stoni chaged the B&W custom 51uF Supreme Oil in his 803D2 with SGO, then he had to make another work to change tw cap again (with a Jensen Duelund if I remember well), it is clear he was not satisfied from the upgrade (iscit a real upgrade, with these diamond tweeters?) from an (aluminium?) oil cap to a silver gold oil cap, since the latter highlights high frequencies and may mask the other parts of the spectrum.
In a well tuned and high quality system (in mine, electricity and source are near to state-of-the-art, with a power regenerator followed by isolation trasformers for each machine and a divine Accuphase DP700 SACD player, cables are near to the best Cardas ever made, Luxman 509u integrated is not the best amp in the world but if you read Uday Reddy’s Soundstage! 2009 review maybe you may hurry to find an used one, or to buy the new 509x) a SGO capacitor could sound without harshness afterall.
Don’t misunderstand me: I don’t listen now with harshness in the highs (only some selected albums make me struggle, for example Genesis’ "Selling England by the pound" or Joe Satriani’s "The Extremist", and I know even these albums could sound better, and all the music with them), I have simply reached speakers limits and I want to go on in my audiophile journey of (personal and equipment’s) improvement.
Another idea could be to use the Supreme EVO Oil in all positions: 4.7uF tw coupling, 47uF mr coupling and 10uF mr bypassing, and EVO Oil on the woofers.
Or 4.7uF Supreme Evo Oil in tw coupling and 10uF in mr bypassing, Evo Oil both in mr coupling (47uF) and in woofer caps (2x100), to make something similar to the original project of both D and D2.
The only truth is one should have to try, not reasoning "on the paper" ... !
I had a change in my system I did not tell you until now...
A (deplorable in my opinion) technician repaired my Purepower putting inside it Claritycap SA caps instead of the original taiwanese Fu-Jack caps (they seem Panasonic or Vishay clones) without telling me before, maybe because he had that caps in stock, without need for ordering a 10uF 500V (for the power stage, right after power inlet) Panasonic and a 2uF 600V (for battery recharge system) Vishay caps.
Now I have the impression of a tonal shift towards mid-highs.
The Humble Honemade Hifi comparison tells the Claritycap make sound shift towards clarity, since Panasonic is the most neutral cap in its range, it does not highlight anything.
Do you think I have to make another technician replace the Claritycap SA in my regenerator with Panasonic and Vishay (since there is no Panasonic cap under 10uF), and only after that to think at speakers recapping?
Many thanks
