MFA MC REFERENCE PREAMP
I have in my system this absolutely fantastic preamplifier !
and good news for you i have the complete documentation !
i can make you a copy and send by postal way if you want.
Probably you can help me ... i replaced the 6922 tube in preamp by others 6922 but ..... in the power supply box there is a big rectifier tube called 9330 from penta laboratories ! impossible to find it , so is it the good reference ? no informations in the documentation .... all schema for preamp box but no details about the last tube i would like to replace .....
and internet site from pentalaboratories.com don't react .....from France ! ( you could try from another location ?)
picard.jeanlouis@free.fr
I have in my system this absolutely fantastic preamplifier !
and good news for you i have the complete documentation !
i can make you a copy and send by postal way if you want.
Probably you can help me ... i replaced the 6922 tube in preamp by others 6922 but ..... in the power supply box there is a big rectifier tube called 9330 from penta laboratories ! impossible to find it , so is it the good reference ? no informations in the documentation .... all schema for preamp box but no details about the last tube i would like to replace .....
and internet site from pentalaboratories.com don't react .....from France ! ( you could try from another location ?)
picard.jeanlouis@free.fr
Hi,
5930 is more likely.
An aviation rectifier, I had a number of them because on paper it was just the best my engineers could find and wanted to toy with it...Very expensive tube.
Cheers,
box there is a big rectifier tube called 9330 from penta laboratories !
5930 is more likely.
An aviation rectifier, I had a number of them because on paper it was just the best my engineers could find and wanted to toy with it...Very expensive tube.
Cheers,
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