Specifications

carefully connect the meter's black lead to chassis ground and
the red lead to the positive side of C10. The voltage here
should read close to +22 +/- 3 volts (photo 8.1e).
Step 24 – If all the above measurements are within specifications, and the speaker is
connected, and with no signal source connected to either input, turn up the volume control
and listen for a low level hiss from the speaker. There will be a slight hum, but anything
drastic indicates wiring troubles.
Step 25 – If the above hiss is heard, turn the volume control back to minimum and connect a
signal source into input 1 of the bright channel.
Step 26 – Turn up the volume on the amp and the signal source (most likely a guitar or
harmonica microphone) and verify that the signal is coming from the speaker.
Step 27 – If everything checks good, turn off amp and install the back panel.
Step 28 – Now the time has come to rock out … your amp is done!
END
Congratulations!
Please send me a photos of your finished amp. A couple of photos of the insides of
your amp, maybe a couple photos of your work bench and of course a few photos of
the amp being played by you, all of these would be greatly appreciated. Send them to
me at the below address.
TubeDepot.com
c/o Robert Hull
1686 Barcrest Dr.
Memphis, TN 38134
… or to my email:
[e-mail]
Keep on playing …
A signal source can be a guitar or high impedance microphone or even a low level CD or
MP3 player. A speaker output from another amp is not recommended.
NOTE
The presence of voltage at step 22 indicates that V3 and V4 are correctly sourcing
current.
NOTE
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