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Old 15th April 2010, 11:01 PM   #1
cmac is offline cmac  New Zealand
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Join Date: Mar 2010
Location: Christchurch, New Zealand
Default Foxtrot Guitar Amp - Output transformer


I am a newbie on the site (great site by the way).
I am returning to valves after an absence of 40 years!
I am building a 3W amp for my guitar playing son and have chosen the attached circuit from Piotr Liskiewicz.

My question is: What should the input impedance of the output transformer be. I am thinking 5K but would like that confirmed.

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Old 15th April 2010, 11:58 PM   #2
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Join Date: May 2009
yes, 5k will work well.
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Old 16th April 2010, 12:18 AM   #3
cmac is offline cmac  New Zealand
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Join Date: Mar 2010
Location: Christchurch, New Zealand
Thanks very much Andrew. Great to get a speedy response.

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