2SC2922 2SA1216 Power Amp

[reji]

i found this on web. any one build amp with these transistors?

 

[bimo]

i found this on web. any one build amp with these transistors?

The design is not optimal. VAS transistor choice, how to compensated, etc. Better you build Honey Badger, OS's design. You can found it in this forum.

 

[JonSnell Electronic]

Yes a poor design.

 

[reji]

thanks for reply guys. any one have better design with these transistors?

 

[vzaichenko]

Sanken beasts

thanks for reply guys. any one have better design with these transistors?

I use them a lot in my designs. See here:

PowerAmp Pio 7-channel Project (VFA)
This one is very mature, repeated a number of times. Mainstream product 🙂
I have also designed a lower voltage / lower power / one pair OPS option of this one on request of one of the builders.

Advanced CFA, not a simple one though
Very high-quality one. For experienced builder.

Recent class "A" design
Very linear, low distortion, stable - excellent sound. Not eco-friendly though 🙂

All designs are prototyped, fine-tuned and tested, with PCBs, etc.

If you wish to build some of those - let me know, there may be some insignificant, however useful, changes since they were published - I will share them with you.

I would recommend either the first one or the third one (if you are not afraid of high currents / high heat dissipation).

Cheers,
Valery

 

[reji]

Thanks vzaichenko. third one is much better. i have another question, can i use 2922/1216 in DX amp?

 

[vzaichenko]

Thanks vzaichenko. third one is much better. i have another question, can i use 2922/1216 in DX amp?

I believe - would not be a problem, they are pretty versatile - fast, powerful, relatively low Cob. However, better ask Carlos (destroyer X) - he is the author 😉