100W Ultimate Fidelity Amplifier

[apexaudio]

very good amplifier, deep bass,soft mids and silk hi's..

Nice work
Regards

 

[apexaudio]

It's best to avoid the BD139/140 if you want others to successfully reproduce your design, because they vary greatly between manufacturers.

Yes, that is problem with common parts there is many fakes,
Regards

 

[lelut]

Hi Mr Mile,

Sorry for asking again,
how max Voltage supply for AX20, for +-90v any part modify?
and recommended type of final transistors?

thanks for best answer Mr,

BR//

 

[vargasmongo3435]

Hi Mr Mile,

Sorry for asking again,
how max Voltage supply for AX20, for +-90v any part modify?
and recommended type of final transistors?

thanks for best answer Mr,

BR//

hello sir so far mister Mile mention that 65V+/- is the maximum

Regards
Juan

 

[MATSAZILIN]

PDF for ironing Sir.

 

[vargasmongo3435]

PDF for ironing Sir.

Hello sir here are the files also the reference schematics I use, I did some changes on the layout for my self but you can use the schematic and change some values of the AX-20P to be the original values from AX-20P schematic, I spend a couple of day already checking for error or better say "bugs" and I have not found any more so far, if you guys see any error let me know so I can fix it right away I said this because eyes get tired man

ok here are the files

Regards
Juan

 

[apexaudio]

Hi Mr Mile,

Sorry for asking again,
how max Voltage supply for AX20, for +-90v any part modify?
and recommended type of final transistors?

thanks for best answer Mr,

BR//

No part modify but you need 7-8 pairs of outputs.
Regards

 

[vargasmongo3435]

No part modify but you need 7-8 pairs of outputs.
Regards

oh .... so is good to know that

man I can not decide ... I have the AX-20P ready and also I have the Apex HV23 ready too, decision decisions .....

Regards
Juan

 

[apexaudio]

I use DC servo circuit for A33 and A40 from marantz and made mistake with resistor value 470R instead 470k.

 

[apexaudio]

oh .... so is good to know that

man I can not decide ... I have the AX-20P ready and also I have the Apex HV23 ready too, decision decisions .....

Regards
Juan

I suggest A40
Regards

 

[still4given]

I suggest A40
Regards

Has anyone done a layout for the A40 yet?

 

[thimios]

Has anyone done a layout for the A40 yet?

Yess Alex mm of course
http://www.diyaudio.com/forums/solid-state/164093-100w-ultimate-fidelity-amplifier-415.html

 

[still4given]

Sorry the link is not working. Post #?

 

[apexaudio]

Sorry the link is not working. Post #?

Post #4145

 

[btesize]

No problem.

Thank you.

 

[still4given]

Thanks

 

[vargasmongo3435]

I suggest A40
Regards

uhmm ... I will check that thanks #4145 I can dude that with time of course

Regards
Juan

 

[MATSAZILIN]

Thank You Sir.

 

[still4given]

Getting a start on the A40.

 

[apexaudio]

Getting a start on the A40.

Nice pcbs, A14 and A40 use diamond output stage,
Regards