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Thread Tools |
9th June 2019, 06:57 AM
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#1 |
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diyAudio Member
Join Date: Feb 2016
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Apex A40 Amplifier Build Thread
This is a dedicated thread to the Apex A40 Amplifier. Feel free to share your build and discuss and share information about the A40.
I will do my best to keep this 1st post updated with as much information as possible. I am still building this out, please be patient. If there are any errors please let me know!  The Project The Apex A40 Amplifier was designed by Apex Audio and kindly shared to DiyAudio community. He has continually shared various designs, revisions and countless feedback over many years. All of his designs are popular and well endorsed by many experienced members in the DIYA Community. The original thread can be found here - 100W Ultimate Fidelity Amplifier - diyAudio Schematic Apex A40 Files Gerbers, Mirrored PCB images, Photos, Schematic and Partial .txt BOM can be gound here - Apex A40 Amplifier Build Thread a40%20pcb%20color.jpg Bill of materials Anyone with an up to date BOM for Digikey please contact me Transistor Choices 2SA1943 – Toshiba, On Semiconductor - Transistors - Bipolar (BJT) - Single | Discrete Semiconductor Products | DigiKey 2SC5200 – Toshiba, On Semiconductor - Transistors - Bipolar (BJT) - Single | Discrete Semiconductor Products | DigiKey MJL4281 - On Semiconductor - Transistors - Bipolar (BJT) - Single | Discrete Semiconductor Products | DigiKey MJL4302 - On Semiconductor - Transistors - Bipolar (BJT) - Single | Discrete Semiconductor Products | DigiKey NJW0281GOS-ND - On Semiconductor - https://www.digikey.in/products/en?keywords=NJW0281 NJW0302GOS-ND - On Semiconductor - https://www.digikey.in/products/en?keywords=NJW0302 Are my transistors a fake/copy thread - My Transistors, original or copy? Power supplies Construction tips Please contact me with any tips you have to share. Project modifications Know of any proven mods? Please share them! Recommended DIY Pre Amp Apex P30 A40 Members and build photos Please Share your builds! JUST WAITING ON MODERATOR APPROVAL FOR UPLOADING MORE FILES TO THIS THREAD/POST. Cheers! Last edited by HatlessChimp; 9th June 2019 at 01:16 PM. |
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9th June 2019, 01:05 PM
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#2 |
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diyAudio Member
Join Date: Feb 2016
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APEX A40 FILES
Includes - Gerbers, Mirror PDF, Schematic, Top view. APEX PROTECT FILES Includes - Silkscreen, Mirror PDF, Sprint File. Last edited by HatlessChimp; 9th June 2019 at 01:18 PM. |
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9th June 2019, 01:10 PM
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#3 |
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diyAudio Member
Join Date: Feb 2016
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More APEX A40 FILES
These files I've listed as Version B only to help all the files from getting mixed up.
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9th June 2019, 01:29 PM
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#4 |
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diyAudio Member
Join Date: Feb 2016
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UNCONFIRMED A40 FILES
These files I am unsure if they are usable. Would be nice if someone could please help me verify them and provide some information on them. Thanks!
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9th June 2019, 08:02 PM
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#6 |
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diyAudio Member
Join Date: Oct 2016
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For my new A40 I use these final transistors.
By the way, the other day the one channel sounded great in a state of being.   And of me great thanks to Apex Audio for the excellent circuit. Someone had said there was no perfect amplifier.))))) This is not the case. |
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9th June 2019, 08:32 PM
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#7 |
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diyAudio Member
Join Date: Mar 2006
Location: Baia Mare ,
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A40 in progres
Hi all,
The latest revision of PCB  Will be ready this summer . BR Alex
__________________
CD player Onkyo C-N 7050 , Preamp's :Adagio tube and Goldmund Mimesis 27 , Speakers :Taga Harmony Platinum F-120 Amp's: 2XGoldmund Mimesis9.2, A33, 2XGROMES A260 tube , SARA , QUAD 405-13 |
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10th June 2019, 08:49 AM
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#8 | |
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diyAudio Member
Join Date: Feb 2010
Location: Serbia
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Quote:
__________________
https://www.facebook.com/APEXaudio.MileSlakovic |
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10th June 2019, 09:20 AM
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#9 |
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diyAudio Member
Join Date: Nov 2016
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Hello every one
Is it possible to feed A40 with +/-75vdc? Output devices are sanken's a1216 c2922. |
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10th June 2019, 10:07 AM
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#10 |
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diyAudio Member
Join Date: Feb 2014
Location: Prague
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My build...
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