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In Reply to: RE: Interesting...... posted by Baki on December 17, 2014 at 06:28:50
.... by Eric, I had that pdf'd and well considered a while ago, along with the HumbleHomeMadeHiFi; Jon L.s staggering capacitor comparison work at Enjoy the Music/DIT.com and Audio Circle; The Great Capacitor Shoot-Out; and AV Frontline's 21 capacitor shoot-out, as well. Oh, and various stuff from Jimmy's Junk Yard, too. He's fun to read as well, and does small-scale, reasonably well-conducted shoot-outs.
If you look at Eric's article carefully, you'll see that he didn't give the Obbligatos (or any other caps) much more than 10 - 20 hours break-in, and he says plainly that in the introduction. I have already posted here in this very thread that the Obbligatos take a dreadfully long time to break in (250-500 hours), sadly, and have somewhat mediocre bass in the initial stages, say, before 100 hours at least, probably more. Thus, Eric's findings are absolutely spot on for a non-broken in Obbligato Gold. But not for a fully broken in Obbligato Gold, at least in my fairly extensive experience with them.
If yours were fully broken in when you critically listened and formed your opinions, I do not know why you heard a loss of bass with the Obb Golds. That is not in the realm of my many experiences with them. Of course, everyone's taste, and mileage, will vary, as always.
Cheers,
WS
Follow Ups:
Jantzen superior silver Z-cap is my favourite coupling cap.
The price is decent for the given quality.
HumbleHomeMadeHiFi tests capacitors in crossovers at midrange and tweeter positions.
In my 10+ years experience one extensive week of listening was always quite enough to judge any passive or active component.
YMMV, of course, and I appreciate that.
Winston. you mentioned that the FR of this particular cap is flat, although you never measured it. It's a passive device after all. Before it's broken in, you say that the bass is reticent, so something must be going on in the capacitor in order to subdue the lower frequencies. Or conversely, something is happening to exaggerate these frequencies later on in the burn-in. What's happening do you think?
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