KA30se "KRYPTON" SE class A amplifier

[bogdan_borko]

This is the finall version of the amplifier I`ve been working on lately. It is a class A amplifier single ended with impemented "aleph ccs".

30W on 4Ohm load
Open loop distortion @ 1W/4Ohm = 0.03
Open loop bandwidth 48KHz (-3dB)
CL distortion @ 95% power = 0.08%
CL bandwidth 480KHz

 

[bogdan_borko]

ps regulator

 

[bogdan_borko]

pcb

 

[bogdan_borko]

What I`d like to ask is it comensated right and is there any specific type of compensation i should try?

BTW the sound is VERY good and precise nothing like the classic SE amplifiers..

Thanks in advance, Borko.

 

[gni]

What I`d like to ask is it comensated right and is there any specific type of compensation i should try?

There are many knowledgeable people on the DIY audio forum; maybe
you should be more specific about 'comensated'.

 

[bogdan_borko]

twins:

 

[bogdan_borko]

This is the schematic update:

The feedback is now decresed to 35dB and the sound is beautiful!

 

[bogdan_borko]

backside:

 

[hihopes]

Seems very nice Bogdan, but the schematics are not very clear (at least not on my computer).

 

[yoke]

it's clear on my...🙂

when you open it in another window, you can point on it and wait a sec, then klick on ''expend to regular size'' (try to remove pointer from pic and then move it back)

at least thats how it work on my PC ;-)

 

[hihopes]

Thanx, got it.