Wiring a tube guitar amplifier heater can be a pain in the rear. From twisting the leads to cancel out hum, to routing the 18 AWG wire the whole operation can be a hard animal to tame.
I’ll show you a couple tricks in this video on how you can do it. Enjoy this tutorial in 3 parts!
And once you’re done please give it some social love from the bookmark link below. Thank you!
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An idea here to help keep noise down from the heaters.
The nature of a 12A?7 encourages noise cancellation (the heaters paralleled to run @ 6.3v) The output section, when Push-Pull helps to cancel out its own noise. To help even further, when wiring the heaters for any p-p power tubes (el84, el34, kt66, etc), keep the heater pin wiring the exact same color (i.e. heater on pins 4 & 5, wire all pin 4s together as a “group” and all pin 5s the same. pairs: 4-4,5-5; quads: 4-4-4-4, 5-5-5-5)
Fantastic Tip!
Will – That’s excellent! I will implement this idea on all my amps from now on!
A HUGE THANKS!
Great – but the same tutorial could have been done in a three minute clip! I fell asleep watching it!
Reviewing it now I have to agree with you
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cheers!
Gabi.