Wurlitzer schematic needed for a 6420 amp - diyAudio
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Old 30th October 2003, 12:17 PM   #1
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Default Wurlitzer schematic needed for a 6420 amp

Can anyone send me a link or post a schematic for a Wurlitzer 6420 organ amplifier? Any help here would be appreciated.





Joe
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Old 15th November 2003, 01:52 PM   #2
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Default A diamond in the rough

Well, I ended up drawing up the schematic for this old girl. I'm sure I don't have the output transformer drawn correctly but I have the color of the leads and where they go. Frank, I still hate drawing schematics!

A special thanks to Michael for his help and patience in getting these things going. I have learned about field coils as a result.

Putting out a healthy 18-20 watts these amps sound great. Dispite their age they were quiet hum wise and deliver very nice sound. As I result I have become a fan of the 6L6GC tube. The price was right too, 4 for $100.00 shipped.

Being that they used field coils would they have been from the 40's or 50's era?


J
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Old 16th November 2003, 12:31 AM   #3
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Hi,

Quote:
Frank, I still hate drawing schematics!
Uebung macht den Meister...IOW, practice and you'll get there.

Quote:
Being that they used field coils would they have been from the 40's or 50's era?
Something like that, yes.

The 6L6 is the grandmother of an awful lot of circuits and tubes alike.

Cheers,
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Frank
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