BAF 2015 Coverage

[Soundhappy]

I really like that music video.

Getting things back up to speed here. I pulled this out of the mothballs today. That's Nelson's BAF 2015 Schade Amp, and yep, that's .04%! 🙂 I was trying out the mu follower tap. 🙂

I'll be working on getting these DIY-ready.

Superb elegant Schade 50 pcb's boards.
Btw more IXFN140N20P can be on command back in Mouser stock.
Kindest regards

 

[jama]

Hi all, just to complete information of big SE built on posts #651 to #667, I would like share harmonics pattern to some outputs at 4 ohm. I do not know how is the ideal pattern, but it looks nice. I did not heard it yet because I disassembled it until a few days ago that my good friend Steve asked me about this harmonics information.
Anybody knows if this harmonics pattern is enough good?
Now I want to built the second channel and adjust them to 16 ohm and hear..
Best Regards

 

[jama]

The rest of photos

 

[jama]

And

 

[dady]

Thanks dude for your findings. Actually is a Triode directly coupled to 4Ω. I like very much!

 

[wengtech]

hello,
how to choose the sweet spot according to curve tracer data?
i mean what current and voltage we are after by measuring the curve?

thanks.

 

[WBS]

Check out Nelson's article on the subject:
PassDiy

 

[Michael Rothacher]

Finding the sweet spot by eyeball from IV curves is not practical or realistic. It has to be measured in situ. I did a YouTube Video on this that may help.

 

[Nelson Pass]

True. Nothing beats a real circuit and a simple distortion analyzer.

 

[dady]

Buena Aclaración maestro. Good aclaration Teacher.
Do you suggest that the QA400 is a good tool for a hobbyist?
Thanks in advance.

 

[Michael Rothacher]

I've never tried a QA400, but resolution-wise it appears to be much more than adequate for this task. Most soundcard setups would be adequate, I would think. Jan Didden's automatic attenuator would be a nice accessory for that purpose.

🙂