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RE: Brook 12A bass response? 1953 update

I took notes from a Brook 12A 1953 schematic I saw in the Klipsch Museum Of Audio History. It was listed as updates. I am in the middle of a 12a clone build so I am going with the updated version.

C12 C13 to one .5
C14 C15 to one .5

R14 68K
R15 68K

High sensitivity, wide dynamic range, low distortion, and smooth frequency response. Pwk


Edits: 03/13/17

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