I hope to build a (one tube) 845 SE amp,
25 watt power output, frequency response 18 to 22,000 Hz, +/- 1 dB.
20 Hz 25 watt power output under 3% THD. someone did it before?
Which output transformer can meet to this specification?
16K, 18k or 20K
Triode / Pentode Loadline Simulator (v.1.0 20161216)
give a curve
Ra =19.4K ohm
Total Harmonic distortion 2.033 [%],
If custom made this 19.4 k ohm transformer, this project will workable?
please get me some suggestion, I really hope to build a 845 SE amplifier 25 watt power output running on 20 Hz, total Harmonic distortion below 3%.
25 watt power output, frequency response 18 to 22,000 Hz, +/- 1 dB.
20 Hz 25 watt power output under 3% THD. someone did it before?
Which output transformer can meet to this specification?
16K, 18k or 20K
Triode / Pentode Loadline Simulator (v.1.0 20161216)
give a curve
Ra =19.4K ohm
Total Harmonic distortion 2.033 [%],
If custom made this 19.4 k ohm transformer, this project will workable?
please get me some suggestion, I really hope to build a 845 SE amplifier 25 watt power output running on 20 Hz, total Harmonic distortion below 3%.
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You aren't going to get a 16K, 18K, or 20K output transformer with much in the bass department. Lundahl makes a small 16K/5W transformer that's good to about 30Hz. J&K made a 16K transformer that's a little bigger for a 211 amp that looks to be good for about 35Hz.
1250V/80mA into a 10K load will get you pretty close to 25W.
The distortion question would make me suggest that you pick a tube that can do 40-50W single ended, then you'll get the distortion you're looking for at your desired power level. You could also use global feedback to help meet your goals.
1250V/80mA into a 10K load will get you pretty close to 25W.
The distortion question would make me suggest that you pick a tube that can do 40-50W single ended, then you'll get the distortion you're looking for at your desired power level. You could also use global feedback to help meet your goals.
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