Heathkit AG-9A audio generator schematic !!! - diyAudio
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Old 14th November 2008, 12:25 AM   #1
aldovan is offline aldovan  Brazil
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Default Heathkit AG-9A audio generator schematic !!!

Friends

I need the Heathkit AG-9A schematic.
My AG-9A version have a 12AX7 in the circuit.
Have other version with no 12AX7.
Can anyone help me ?

Thanks,

Aldovan
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Old 14th November 2008, 02:05 PM   #2
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Heathkit Schematics

Scroll down a bit and you will find it.
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Old 15th November 2008, 01:05 AM   #3
aldovan is offline aldovan  Brazil
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Default Do not is these !!!

Thanks, but my Hethkit have other schematic.
Mine is the AG-9A, but the circuit use 12AX7 tube !!!

Aldovan
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Old 15th November 2008, 01:47 AM   #4
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You mean that one of the tubes (or both) in that schematic have been replaced with 12AX7? Hmm.... strange. The circuit is pretty simple you should be able to trace out the schematic yourself. You may have to as a google of that model number with 12AX7 reveals nothing.
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Old 15th November 2008, 03:03 AM   #5
anatech is offline anatech  Canada
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Hi Mike,
Quote:
You mean that one of the tubes (or both) in that schematic have been replaced with 12AX7? Hmm.... strange.
I'll say! The unit used pentodes and subbing in triodes is really weird. I've only ever seen small changes in the manual, never anything as fundamental as this appears to be.

Hi Aldovan,
Does this unit appear to have been worked on at all? I'm wondering if it wasn't modified by someone. If the serial number is very low, it might be one of the first ones made. Always a possibility.

-Chris
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