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  1. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    Don't be afraid to drive 4 ohms speakers wit this amp. My 3A reference 2001 are 4 ohms speakers and are easily driven by the M-22
    Post by: legarem, Jun 20, 2021 in forum: Power Amps
  2. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    If the Cap and ESR tester interest you, the best price is here:...
    Post by: legarem, Jan 29, 2021 in forum: Power Amps
  3. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    Today, I found what I consider the best input cap for the M-22. I had in my stock two 5uF 200V that came from a Classe DR3. They are quite small....
    Post by: legarem, Jan 29, 2021 in forum: Power Amps
  4. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    Here are picts [IMG] [IMG] [IMG] [IMG]
    Post by: legarem, Jan 29, 2021 in forum: Power Amps
  5. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    I bought a cap tester which can also read cap ESR. Today, I measured the four 33 000 uF power supply caps. This was a really good surprise for me....
    Post by: legarem, Jan 29, 2021 in forum: Power Amps
  6. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    I had to repair a Linn LK280 amp so by the way, I decided to try it in my system. I am amazed by what I heard. I looked at the LK280 circuit and...
    Post by: legarem, Dec 11, 2020 in forum: Power Amps
  7. legarem
    Profile Post

    Hello. I'm in the process to buy a Klout and I'm searching for the service manual or the...

    Hello. I'm in the process to buy a Klout and I'm searching for the service manual or the schematic. Can you email me them ? Thanks a lot. Marc...
    Profile Post by legarem for dBel84, Nov 20, 2020
  8. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    You found the name I forgot. The recommendation came from Mr Frankland to use these numbers.
    Post by: legarem, Nov 17, 2020 in forum: Power Amps
  9. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    An amp designer which I forgot the name recommended me 2N6338, 2N6341 for replacement. There are 40MHZ which is quite high like originals.
    Post by: legarem, Nov 15, 2020 in forum: Power Amps
  10. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    Yes cymbals and such are hot. The ITT is finally not a good choice. Probably a really good polypropylene and oil cap should tame this treble. As...
    Post by: legarem, May 18, 2020 in forum: Power Amps
  11. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    I'll perhaps take a break with the M22. I just finished to overhaul a pair of Melos tube single ended triode with 4 X 6KG6 per amp which delivers...
    Post by: legarem, Jan 31, 2020 in forum: Power Amps
  12. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    More gain should be good but also less 'sparkle' in the treble should be great.
    Post by: legarem, Jan 30, 2020 in forum: Power Amps
  13. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    As I'm tempted to lower NFB by increasing R10 I was asking if I had to change the value of R12 and C21
    Post by: legarem, Jan 30, 2020 in forum: Power Amps
  14. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    Question for Jeff or others What they are trying to do with all the RC in the negative feedback loop ? They seem to work in very high...
    Post by: legarem, Jan 30, 2020 in forum: Power Amps
  15. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    They now sell clone boards on Ebay...
    Post by: legarem, Jan 30, 2020 in forum: Power Amps
  16. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    I did repeat it last night. I turned off the amp to let it cool. The results are the same as the first time. When cold, the square waves are...
    Post by: legarem, Jan 29, 2020 in forum: Power Amps
  17. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    No the square generator is ok. What bother me is the difference between cold and hot. It is the same on both channels.
    Post by: legarem, Jan 28, 2020 in forum: Power Amps
  18. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    The square waves I previously showed were done when the amp was nearly cold. I redone new square wave testing with the amp at 65*C (149*F) This is...
    Post by: legarem, Jan 28, 2020 in forum: Power Amps
  19. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    Hi Jeff. Finally, there's no overshoot at all. What goes in goes out. It's amazing to see such square waves. You can see here in Dropbox, 50 hz,...
    Post by: legarem, Jan 28, 2020 in forum: Power Amps
  20. legarem
    Post

    Pioneer M-22 Power Amp - Epic Japanese Gear From the Past

    This afternoon, I listened the amp with 650ma bias. With this bias, the amp is tighter in the bass and seems to have a more treble presence...
    Post by: legarem, Jan 27, 2020 in forum: Power Amps
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