I have stumbled on box in my workshop when did spring cleaning . Pass Labs or related stuff. most of them were prototpypes assembled to measure and listen (with resistors which I had on hand-so messy work)- before final assemblies ( which were made on new pcb, so those were “forgotten” for years)
Someone with basics skill can desolder and solder components more nicely ar leave as is and enjoy them rather than collecting dust. there is also used matched power mosfets if needed.
1) Aleph –x (Grey Rollins version) from 2007 one build with dale cfm-55. were working maybe some small parts missing matched irfp 044 and vishay 240 can be included
2) XA.5 based project from ~2014 , some changes were made comparing to original units ( like biasing circuits- termostablisation implemented with mosfet instead of thermistor) I can provide schematics with parts with condition not publish it. total 3 channels of complete amp (with reduced mosfets to 16psc to target more current per fet and 2psc main /driver board , 6 powerboards.
3) XA.5 based project from 2012 with stock bias circuit . 4 channels.one unansembled I should have somewhere parts schematics for it
4) aleph 5 3 chanels from ~2003. pcb condition is poor some pcb tracks are damaged.
5) first wat f5 pcb 2 chanels . should have schematics somewhere but its so simple that it could be assembled with oficial f5 schematics
6) XA.5 project from 2015, same as 2) just newer/better revision pcb. 4psc new+2 pcb new but already soldered most resistors
Someone with basics skill can desolder and solder components more nicely ar leave as is and enjoy them rather than collecting dust. there is also used matched power mosfets if needed.
1) Aleph –x (Grey Rollins version) from 2007 one build with dale cfm-55. were working maybe some small parts missing matched irfp 044 and vishay 240 can be included
2) XA.5 based project from ~2014 , some changes were made comparing to original units ( like biasing circuits- termostablisation implemented with mosfet instead of thermistor) I can provide schematics with parts with condition not publish it. total 3 channels of complete amp (with reduced mosfets to 16psc to target more current per fet and 2psc main /driver board , 6 powerboards.
3) XA.5 based project from 2012 with stock bias circuit . 4 channels.one unansembled I should have somewhere parts schematics for it
4) aleph 5 3 chanels from ~2003. pcb condition is poor some pcb tracks are damaged.
5) first wat f5 pcb 2 chanels . should have schematics somewhere but its so simple that it could be assembled with oficial f5 schematics
6) XA.5 project from 2015, same as 2) just newer/better revision pcb. 4psc new+2 pcb new but already soldered most resistors
Attachments
