Cathode resistors
Posted: Fri Jan 02, 2015 2:13 am
Hello Dave,
Got the autoformer modules in house and want to get going.
Output stage is SE triode strapped EL84. Shared 100 ohm cathode resistor, possibly single 200 ohm for each channel. Bypassed, 200uf w/ shared 100 ohm, 100uf w/ single 200 ohm. Would prefer shared 100 ohm unless for your issues the single 200 ohm is better. Current is 90 ma through the shared 100 ohm, 45 ma through the single 200 ohm. I'll have some ventilation holes above the resistors on the top plate.
All of the technical issues ( capacitance, inductance, heat ) are above my understanding to assess. It just makes sense to me that copper wire will sound better than any resistor if it can be implemented.
Is it doable ? I'll trust your judgement.
Thanks, Crazy Bill
Got the autoformer modules in house and want to get going.
Output stage is SE triode strapped EL84. Shared 100 ohm cathode resistor, possibly single 200 ohm for each channel. Bypassed, 200uf w/ shared 100 ohm, 100uf w/ single 200 ohm. Would prefer shared 100 ohm unless for your issues the single 200 ohm is better. Current is 90 ma through the shared 100 ohm, 45 ma through the single 200 ohm. I'll have some ventilation holes above the resistors on the top plate.
All of the technical issues ( capacitance, inductance, heat ) are above my understanding to assess. It just makes sense to me that copper wire will sound better than any resistor if it can be implemented.
Is it doable ? I'll trust your judgement.
Thanks, Crazy Bill