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Old 20th May 2007, 10:38 PM   #1
arvin is offline arvin  United Kingdom
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Default headphone amp circuit diagram usinga 300b tube

Does anyone have a headphone amp circuit diagram using a 300b tube, I wouldn't mind having a go at building one.

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Old 21st May 2007, 04:07 AM   #2
arnoldc is offline arnoldc  Philippines
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to drive what impedance cans?

uhm, take your favorite 300B circuit and put an OPT with the proper secondary on it... take will give you a start.
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Old 21st May 2007, 04:54 AM   #3
arvin is offline arvin  United Kingdom
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my cans are 64 ohm impedance
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Old 21st May 2007, 05:39 AM   #4
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Arnold is correct -- just get some OPTs with a 64 ohm tap, perhaps a higher than normal primary, and maybe ease up on the driver -- you don't need to drive it to full output.
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