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Old 10th September 2012, 09:05 PM   #1
milosus is offline milosus  Serbia
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Default 6n14p headphone amp

one question-is this amp will be suitable for drive 32ohm load? like they wrote.

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Old 10th September 2012, 09:52 PM   #2
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It depends on voltage swing needed on 32 Ohm load, and maximal distortions you can tolerate. First, you should find current swing of cathode current needed to drive your load to needed voltage swing. Then, looking at curves what kind of grid to cathode voltage swing is needed for such current swing, and how linear will be output. Also, check if triodes of the tube on such current and voltage as drawn on schematic mean power dissipation below SOA, or you risk to fry the tube.

Then you have to calculate impedance of coupling capacitor (100 uF on schematic) in respect to impedance of the load (32 Ohm) and decide if roll-off on the lowest frequency (say 20 Hz) satisfies you.
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Last edited by Wavebourn; 10th September 2012 at 09:56 PM.
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