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Old 17th November 2010, 01:54 AM   #1
nige838 is offline nige838  United States
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Default 50C5=50l6; 12av6=12at6

Can I sub a 50l6 in a circuit that uses a 50c5 without changing other components? I have studied their data-sheets and it appears to me that it would be ok? Any advise greatly appreciated...

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Nick
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Old 17th November 2010, 02:18 AM   #2
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Similar but different pin-out. 50L6 has higher max ratings. You'd have to rewire the socket.
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Old 17th November 2010, 02:21 AM   #3
nige838 is offline nige838  United States
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Quote:
Originally Posted by cogsncogs View Post
Similar but different pin-out. 50L6 has higher max ratings. You'd have to rewire the socket.
Is the only thing that I would have to do be rewire the pinout for the tubes? Essentially, All I want to do is remove the 7-pin socket and wire in a 8pin socket, (12at6 to 12sq7) and (50c5 to 50l6).

Here's the circuit that I'm working with...
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Old 17th November 2010, 02:34 AM   #4
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Quote:
Essentially, All I want to do is remove the 7-pin socket and wire in a 8pin socket, (12at6 to 12sq7) and (50c5 to 50l6).
The 7 pin tubes are from the second generation of AA5 radios. The octal tubes are from the first gen. The octal version of the 35W4 is the 35Z5. The circuit should work as is although some experimentation may be needed to get the sound exactly right. The capacitor across the output transformer was fairly common in old AM radios since it helped dull the static. In a guitar amp the sound may be improved with a lower value or no cap at all.
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Old 17th November 2010, 02:35 AM   #5
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Yep, you have to change it all to octal sockets. Filament voltages and currents will be the same.
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Old 17th November 2010, 04:35 AM   #6
nige838 is offline nige838  United States
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Thank ya'll very much, just the information that I was looking for...

Thanks,
Nick
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