I would say that it is correct operation. If you want to slow down the thump, increase the 1kuF across the opto to say 3.3kuF.
Look at the Singing Bush version.
My two cents
🙂
As long as there's no harm to my speakers I don't care.
Regards,
Dan🙂
to Dantworney #1502
Good morning Dan,
my 50W-SE-Schade was motorboating. I put the potentiometer at the input
(like suggested by Nelson Pass) and could easily adjust it / get rid of the 'motorboating'.
Or do you hve a buffer at the input?
Have a relaxed easter weekend!
Dirk 😀
Good morning Dan,
my 50W-SE-Schade was motorboating. I put the potentiometer at the input
(like suggested by Nelson Pass) and could easily adjust it / get rid of the 'motorboating'.
Or do you hve a buffer at the input?
Have a relaxed easter weekend!
Dirk 😀
buffer on input seems as solution
I didn't had a moment of motorboating , when developing Schade Singing Bush option
I didn't had a moment of motorboating , when developing Schade Singing Bush option
Testing today. No buffer on the current version. If it motorboats, in goes a potentiometer.
Regards,
Dan 😉
Regards,
Dan 😉
Not having any fun. My son-in-law thinks my Schade weighs the same as an X350. More later...............

as we all know, soninlaws aren't too bright Species
after all, we are someone's soninlaws
go figure

after all, we are someone's soninlaws
go figure

to Dan
Hello Dan,
those are great news! Your 50W-SE-Schade-amp is playing music


Enjoy the sound!

Dirk
Hello Dan,
those are great news! Your 50W-SE-Schade-amp is playing music



Enjoy the sound!

Dirk
to ZenMod
Hello ZenMod,
Dan is the first man who has lost gravity for heavy classA-amps... 😉
The sound is so good, that the whole world is standing upside down.😀
Oh, I forgot that this world is round and there is always something
'down under'....
Sorry, Dan! A little joke.
Grets
Dirk
Hello ZenMod,
Dan is the first man who has lost gravity for heavy classA-amps... 😉
The sound is so good, that the whole world is standing upside down.😀
Oh, I forgot that this world is round and there is always something
'down under'....
Sorry, Dan! A little joke.
Grets
Dirk
You Dodo
everyone knows that only Pico is so dumb to be down under
we all are so clever, so we are ...... not down under
it must be some local anomaly in Dan's room
everyone knows that only Pico is so dumb to be down under
we all are so clever, so we are ...... not down under

it must be some local anomaly in Dan's room
Many thanks to Pa, Zen Mod, Ben Mah, any the many others who supported my quest to build a full blown 50 watt Schade! It took a monumental effort and several burnt mosfets but I made it! I’m now enjoying a brief respite before, like a true DIYer, I finish my M2x!
Regards,
Dan 🙂
Regards,
Dan 🙂
Attachments
Fugly!
Great work Dan and congratulations on making it to the finish line!
Puny speakers ... where did the sub go? 🙂 ... not the little shoebox hiding behind the Logans ... the REAL one!
Cheers!
Twitchie
Great work Dan and congratulations on making it to the finish line!
Puny speakers ... where did the sub go? 🙂 ... not the little shoebox hiding behind the Logans ... the REAL one!
Cheers!

Twitchie
Fugly!
Great work Dan and congratulations on making it to the finish line!
Puny speakers ... where did the sub go? 🙂 ... not the little shoebox hiding behind the Logans ... the REAL one!
Cheers!
Twitchie
Three speakers in the pic. Currently playing are my Martin Logans. In the background are my Line Arrays with my sub just left of my rightmost ML.
Regards,
Dan 🙂
well, I wasn't helping exactly
mostly teasing and mocking
I duplicated your Singing Bush current source which was of great help. Also, teasing can be helpful. It all depends on how you take it. 😉
Regards,
Dan 🙂
Good work, Dan. Glad that you got it working. I guess you like big things. Big TV, big speakers, big amp ...
well, I wasn't helping exactly
mostly teasing and mocking
Looking good. Looks very heavy too.🙂
Weighs the same as an X350? 🙄
Believe me. It’s a beast to lift!
Regards,
Dan 🙂
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