Tuesday, July 24, 2018

Could an 6080 direct drive a 70Ω loudspeaker?


At your own risk. All safety precautions should be followed when working with a voltage even a low one.


The 6080 has a very low μ of 2. According to a rule of thumb [Atkins] it should operate with a very low plate voltage.


Would it produce a very low output impedance with a 12V plate supply and pull up or Pleiades bias?


If it is directly connected to plate instead of a load resistor...


Problem is that the heater consumption is excessive. Underheating may produce better sound results or not since now power is requirement not low noise.


References:


https://frank.pocnet.net/sheets/173/6/6080.pdf


http://www.rfcafe.com/references/radio-news/low-plate-potential-tubes-january-1957-radio-television-news.htm








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