In an old thread over the years a call for the schematic of the original Sumo Athena (not the mk-2) was made, without success:
A thorough review of the Sumo Athena was published in US-based magazine AUDIO of August 1989. See post 2 of member Hearinspace in:
including a close description of the functionality. But no schematics. The designer and founder of SUMO, Jim Borgiorno passed away in 2013.
So now, a re-newed request for the schematic.
Anyone?
A thorough review of the Sumo Athena was published in US-based magazine AUDIO of August 1989. See post 2 of member Hearinspace in:
including a close description of the functionality. But no schematics. The designer and founder of SUMO, Jim Borgiorno passed away in 2013.
So now, a re-newed request for the schematic.
Anyone?
James was long from SUMO when the Athena came out so he would have not known anything about the Athena anyway.
Craig
Craig
Thanks for thinking along.
I am considering to re-cap the original version of the Sumo Athena, which is in good condition as is. The above mentioned review suggests the design of the MC / MM stage is done with more than average effort. However, other reviews suggest the audible result is not that convincing.
First of all, a modest sound quality may certainly stem from the many - back then innocent - ceramic capacitors (please do refrain from know-it-all comments). Furthermore, the 27 electrolytics and 20 bi-polars are approaching 40 years of service. So, the unit deserves a next life in honour of the designer, whoever it may have been.
Curious how it will sound after a re-cap, and whether there is something to learn from the special design. Hence the question for the schematic, steming from the spirit of diy.
A schematic may as usual be one or two handshakes away. It just takes the patience to wait for a honorable member who may forward the request to the right person.
I am considering to re-cap the original version of the Sumo Athena, which is in good condition as is. The above mentioned review suggests the design of the MC / MM stage is done with more than average effort. However, other reviews suggest the audible result is not that convincing.
First of all, a modest sound quality may certainly stem from the many - back then innocent - ceramic capacitors (please do refrain from know-it-all comments). Furthermore, the 27 electrolytics and 20 bi-polars are approaching 40 years of service. So, the unit deserves a next life in honour of the designer, whoever it may have been.
Curious how it will sound after a re-cap, and whether there is something to learn from the special design. Hence the question for the schematic, steming from the spirit of diy.
A schematic may as usual be one or two handshakes away. It just takes the patience to wait for a honorable member who may forward the request to the right person.
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