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In Reply to: RE: Any experiences with different caps in the Prometheus posted by doughter on August 25, 2008 at 14:23:45
I've used Obliggato and Jupiter caps on my Altas. I then discovered that Robert has just started having his own capacitors made, I'm building a kit for a relative so I borrowed the new capactors and tried them. Interestingly the new capacitors are slightly higher value (1.24uF). I believe that other capacitors tried in similar values sounded harsh but the new capacitors acheive the difficult balance of being both smooth and detailed.
I use a particular Diana Krall track to check sibilance, it's quite a mean track in terms of vocals. My fear was that it would be worse with the higher value capacitor. It is better! And the treble is smooth and detailed, more fleshed out too (ie more body or presence). I've been using the new capacitors for a few weeks now and am very happy with them, I won't be swapping them out. A great result.
Clive I did not know Robert is making his own caps. From your comments I will have to include them among the others I'm considering. Not sure if anyone who is changing out caps should now be using 1.25uf.
I've tried 1.22uF in the past with Jupiters, it added way too much treble, Robert's capacitors somehow work, he must have a secret something in the capacitors.
I'm guessing that 1uF would be correct for anything other than Roberts caps. Maybe Robert can comment.