The link with build thread is dead? I can't access it.
Do you have a pdf file with PCB layout that we can press&peel.....I want to try this circuit for home listening. At the moment I am building a DX Amplifier, Boro's studio amplifier and the Evens C-500 to see which one I like most.
Do you have a pdf file with PCB layout that we can press&peel.....I want to try this circuit for home listening. At the moment I am building a DX Amplifier, Boro's studio amplifier and the Evens C-500 to see which one I like most.
Good to see not everyone re-invent the same tired old wheel.
That input reminds me of op-amp with grounded output and take
the power pins out to the current mirrors instead. Yeah, I see that
your diamond buffer ain't grounded but tied to fractional negative
feedback. Somehow you turn the signal over one more time on the
way to the rails with the aid of the CCS, that parts darn strange...
I got one related, but even weirder, novel-er-er, to show later
today. Almost completely inside out of "normal"... This gets rid
the need of extra drive rails for full output swing. The input will
remind you of your own, but my diamond is grounded, and the
NFB summed at the input side instead. How I steal excess VAS
bias from inside out is where it might blow your mind.
That input reminds me of op-amp with grounded output and take
the power pins out to the current mirrors instead. Yeah, I see that
your diamond buffer ain't grounded but tied to fractional negative
feedback. Somehow you turn the signal over one more time on the
way to the rails with the aid of the CCS, that parts darn strange...
I got one related, but even weirder, novel-er-er, to show later
today. Almost completely inside out of "normal"... This gets rid
the need of extra drive rails for full output swing. The input will
remind you of your own, but my diamond is grounded, and the
NFB summed at the input side instead. How I steal excess VAS
bias from inside out is where it might blow your mind.
I did PCB in Sprint-Layot5.0, but cannot attach these files. Now Vegalab where there is a topic on this amp is not working. I will try soon to open the same subject on another site and give a link to it.
35 volts for the output stage is on the PCB the second option, but increased to 45.
Yes you can - if you compress them with WinZIP or if you change the file extension from .LAY to .PDF or .JPG or ...
Do not attach files WinZip and the files from the S-L5.0 can only be jpg, bac, but not pdf. I can send to your address PCB in the Sprint-Layot5.0.
i hope you're putting the output devices and drivers on a heat sink under the board, and not as shown in the layout silkscreen...
if i were you i would also tap your feedback AT the output lead, not on the other end of the summing trace.
if i were you i would also tap your feedback AT the output lead, not on the other end of the summing trace.
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Hi Shurik
Good one! And inverting. Nice to see someone insipred.
Could you please check for slew rate, I believe you've improved it further compared to original design.
Regards,
Adam
Good one! And inverting. Nice to see someone insipred.
Could you please check for slew rate, I believe you've improved it further compared to original design.
Regards,
Adam
Hi Adam
Slew rate is not measured, but should be about 200v/mks or more. Reaction to meander very good, no emission up to 100kGz. I will definitely measure the distortion of the amplifier to eliminate the influence of design on sound quality. Thank you for the original scheme, I hope many will be able to repeat this amp and enjoy great sound.
Regards
Shurik
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