Oldsansui441
Super Member
Amplifier Archaeology. Kinda fun sometimes.
Quite true.
Amplifier Archaeology. Kinda fun sometimes.
The C-50/M-50 were my first Yamaha(s). I bought them in '83 at Clark Air Base in the Philippines and used them for many years. A really sweet "little" amp/pre. Enjoy them.
Here's to a speedy recovery .Thanks for the good wishes. I should be home by Friday, should be no big deal. The Doc said that the cut for the OP is only 5 to 6 cm long.
I got a little sidetracked this week with some fun speaker projects but will be back on track shortly. My Bdent order left Frankfurt on the 3rd so I'm guessing that it is at Customs here in Munich now. They aren't exactly fast at Customs, it could be a week or more before I get notice that I can pick it up.
I also have to decide in speaker terminals, there's no way that the stock things will be staying in the amp.
Good call, yes the speaker terminals are about the only thing l don't like about this series.
You still can try to match them as close as possible by using the hFE (Beta) meter. The ranks are 70 ~ 140 (P) and 90 ~ 180 (Y), not a huge gap. Hoping that the average hFE number between the ranks make it easy, but I don't believe the outputs need to be as closed tight as the differential input transistors have to.My Bdent order arrived today. I had to pay €25 but at least I didn't have to go all the way out to Customs, always a minimum 3 hour journey. The good news is the 2SA1186/2SC2873 are P and Y class respectively so they meet the minimum specs to use, although I don't know if it would be a problem to use 2 different hFe classes together.
You still can try to match them as close as possible by using the hFE (Beta) meter. The ranks are 70 ~ 140 (P) and 90 ~ 180 (Y), not a huge gap. Hoping that the average hFE number between the ranks make it easy, but I don't believe the outputs need to be as closed tight as the differential input transistors have to.