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21st August 2007, 02:00 PM
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#1 |
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diyAudio Member
Join Date: Feb 2007
Location: Bavaria
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SOHA Amp & PSU Layout, need feedback
Hi all,
I decided to build the SOHA headphone amplifier with the J113 CCS. The original article can be found at headwize: http://headwize.com/projects/cavalli2_prj.php I had a look at some layouts for that ampfilier, but none of them was suitable for my project (parts not available, tube upside down etc.). Thus, I tried to make a new layout, with Alps pot on the board, short signal traces and solder points for wires at positions which are ideal for the planned case. The original SOHA schematic from headwize, as well as my schematics (look a little bit different because of my layout program) and boards for the amp and the PSU can be found below. I would need some help in locating errors, also feedback and criticism by experienced DIYers. In order to make it a bit easier for you, I copied the pin connections of the OP-amp, the tube and the J113s on the schematic. Thanks a lot & best regards! Phil |
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