audio nut
MemberJoined: Feb. 12, 2008
Locale: Victoria, Tx USA
Total Posts: 31 |  posted 08-08-2008 08:19 PM CST (US)   |  | 
Guys. I got my 3 channel B22 up and running this evening. I've listened to it for an hour and a half and have a few questions. With my main headphones, which are the very low impedance (25 ohm) Denon AH-D5000's, I'm getting what I call a very faint amplifier hiss between songs. It's not totally "black" or silent with nothing playing. It's nothing I can't live with, but was wondering if there's anything I can do to eliminate it? I might also add that my CK2III that I have has the same very slight hiss between songs. Was wondering if setting the idle current to less than the 160Ma would have any effect on this as I know this amp was also designed to drive small speakers? Could it just be the fact that my headphones are such low impedance and super sensitive? Any ideas, suggestions or opinions greatly appreciated. Oh, by the way, the B22 sounds FANTASTIC and will post further listening comparisons between my CK2III and Bijou, all of which I've built over the last 5 months. Thanks! |
View Post: DIY Workshop » β22: A discrete, cascoded, fully complementary, pure class A amplifier (part 3)
