50w Single-Ended BAF2015 Schade Enabled

[dantwomey]

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

 

[dantwomey]

Next step is to see if it 'motorboats'?

 

[cubicincher]

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

 

[Zen Mod]

buffer on input seems as solution


I didn't had a moment of motorboating , when developing Schade Singing Bush option

 

[dantwomey]

Testing today. No buffer on the current version. If it motorboats, in goes a potentiometer.

Regards,
Dan

 

[dantwomey]

Not having any fun. My son-in-law thinks my Schade weighs the same as an X350. More later...............

 

[Zen Mod]

as we all know, soninlaws aren't too bright Species

after all, we are someone's soninlaws

go figure

 

[dantwomey]

Upside down photo but so far no motor boating and plays nicely!

Regards,
Dan

 

[cubicincher]

to Dan

Hello Dan,


those are great news! Your 50W-SE-Schade-amp is playing music
Enjoy the sound!

Dirk

 

[Zen Mod]

¿ǝnΌ

 

[cubicincher]

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

 

[Zen Mod]

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

 

[dantwomey]

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

 

[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

 

[Zen Mod]

well, I wasn't helping exactly

mostly teasing and mocking

 

[dantwomey]

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

 

[dantwomey]

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

 

[Ben Mah]

Looking good. Looks very heavy too.

 

[pinholer]

Good work, Dan. Glad that you got it working. I guess you like big things. Big TV, big speakers, big amp ...

 

[dantwomey]

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