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M.P.R. Hamer, Harmonaphone, Practical Electronics, February 1969 🇬🇧
Posted: 13 Aug 2021, 14:30
by modman
Re: M.P.R. Hamer, Harmonaphone, Practical Electronics, February 1969 🇬🇧
Posted: 07 Feb 2022, 13:36
by BMS1971
After many changes and redesigns of parts I made a great version of this one...
I removed "direct sound" and "gain", keeping juts 3 volumes
With the help of a friend I redesigned input stage to work with 3 2N2222 transistors
Used MP20 for the pnp fuzz part
And BC337-40 for the octave part, diodes are D9B Russian.
Will post more details if people are interested
Ben
Re: M.P.R. Hamer, Harmonaphone, Practical Electronics, February 1969 🇬🇧
Posted: 10 Feb 2022, 09:12
by deltafred
We are always interested, that's why we are here!
Re: M.P.R. Hamer, Harmonaphone, Practical Electronics, February 1969 🇬🇧
Posted: 13 Aug 2022, 14:59
by BMS1971
as for the input stage there is a great resemblance to this schematic. Worth a try
viewtopic.php?t=31852
Ben
Practical-Electronics-1969-02 Harmonaphone.pdf