A while back I picked up two absolutely perfect 5V6 tubes in a second hand store. I realize they are just like 6V6's with the exception of the heater voltage (5vac) and the heater warm up time I believe. I've used them briefly in one of my amp, and they sounded awesome, and this may be do in part to the too high heater voltage spiking things a bit, but the tubes are also pristine, and look like they have never been used for even a minute.
My question is, how can I safely drop heater voltage in a 6.3vac amp to (around) 5vac ? I realize there is 10% or so leeway. Can I use Zener Diodes ? or do I need to do it with Resistors ? What size resistor ?
I also do not want to change the other heater voltages for the PI and preamp tubes.
Thanks for your help, again !
My question is, how can I safely drop heater voltage in a 6.3vac amp to (around) 5vac ? I realize there is 10% or so leeway. Can I use Zener Diodes ? or do I need to do it with Resistors ? What size resistor ?
I also do not want to change the other heater voltages for the PI and preamp tubes.
Thanks for your help, again !
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