• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

valve sub

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skal

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Joined 2009
Ok firstly i am new to the valve screen and i have limited knowledge about these device's .

i would like to make a tone control circuit that i found in the RDH4 book, it is base around a 6sf5 metal type tube i think it is a pentode i might be wrong it has 8 pins.

How would i go about subbing that valve for a 9 pin base one i was thinking i could use a ecc85 or 12at7.


Any help would be appreciated

Skal
 
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