if you replace the word schem with layout at the end of the link it will show you where all the wires go. This is an all octal amp. Once I find the Gibson schematic that uses 9 pin tubes I'll post it.
whatsnext said:
Sweet!
However, I think I found the solution: A 1/2 watt push-pull amp.
Firebottel Moonlight
What if this were converted to single-ended use? If the output were biased properly, I could build two seperate amplifiers each using half of the three tubes.
People have noted success with 6800 ohm primaries on the output transformer, so an input impeadance of 10k should be about right.
Any thoughts?
Why would you convert this to SE? You'd have like 1/10th of a watt. I see no point in something like this or the Firefly because it is no simpler than a SE 6v6(or other tube) but is way less usefull because it makes less power. I would use both halves of a 12AX7 in cascade driving one output tube. What could be simpler? If you want to get fancy pilfer the tone stack out of an early Plexi.
John........
John........
I guess I should mention that if you do include the tone stack you will likely need another gain stage after it making it a three tube amp, unless you tube rectify.
John......
John......
Here's another one.
http://www.drtube.com/schematics/gibson/ga-5sl-jp.gif
A real amp that turns into an instant pre with the addition on a resistor across the speaker outputs.
http://www.drtube.com/schematics/gibson/ga-5sl-jp.gif
A real amp that turns into an instant pre with the addition on a resistor across the speaker outputs.
The reason I was looking at a 1/10 watt amplifier is because it's not actually going to have to power anything. The Gainclone takes care of that.
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