Symasym - the next generation (supersym)

[EDDELARUE]

Edit , another point to make... the .0008 - .001 % is ALL loads and ALL frequencies and is obtained between 70 - 110ma per device (NJW21193/4 or NJW0302/0281) . If you increase the self type 3 driver current (R50/51 = 22R) , total distortion will not drop significantly, but H2 will be the only remaining component (H3/5/7 just "disappear")[/QUOTE]

Is it better, no ?!!

[ostripper]

Is it better, no ?!!

Some say that is better (no H5/7), even mr. John Curl. 5th and 7th harmonic distortion products are said to be the main players in "harshness" or a "metallic sound". On the latest triple with the driver bias cranked up, a subtle smoothness appears that is missing with the standard 2 stage EF.
Another factor is the biasing , the T3T can stay within 1/2 mv Re on the Op's indefinitely. For these small improvements - 5 components... and it is as stable as an EF type 2. One could just build a standard DX type amp or self amp with a standard OPS , but there would be many limitations. BETTER ???, that is totally up to the application.
OS

[ECS21]

Hi OSTRIPPER,

Have you done a final "maybe" Schematic of your supersym?
Considering it as my next project. To go beside my symasym...

thanks,

[radio]

Originally Posted by alex mm

Hi MJL 21193 ,

I made for you the layout , I think It's acceptable http://i43.tinypic.com/2cx6d7n.jpg

Regards Alex mm .

Hi Alex MM !!
PCB made ​​great!
Where can you find a shematic (circuit) of this amplifier?
http://i43.tinypic.com/2cx6d7n.jpg
thanks and cheers !