K&K Audio / Lundahl Transformers

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K&K Audio / Lundahl Transformers

Fisher 55a transformer in driver stage cathode

98.247.155.176

Hello Kevin,

Which transformer model might you recommend for the driver stage of something like this? I have a pair of LL1660S/PP's. Just wondering about a project.

Thanks,
John
De gustibus non est disputandum

http://www.mcmlv.org/Archive/HiFi/Fisher55A.pdf (Open in New Window)

Follow Ups:

RE: Fisher 55a transformer in driver stage cathode - KevinC 07:09:02 05/17/09 (0)
Without voltages and currents for the driver stage it's pretty difficult to predict what will work in this circuit as it is drawn. As I read it, the IT primary is the cathode load resistor from a DC standpoint and, therefore, the primary resistance is important in setting the operating point of the driver stage. Without knowing the currents and voltages, it's impossible to do anything but guess what the resistance should be.

Kevin Carter
K&K Audio
www.kandkaudio.com

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