Customize Input Impedance?

thegage · 1924

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Offline thegage

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on: May 01, 2016, 12:40:00 PM
Is is possible to customize the input impedance of the Eros? If so, how difficult?

John K.


Offline Doc B.

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Reply #1 on: May 01, 2016, 01:20:44 PM
You just change the 47K resistor across the input grid for whatever value you want. Going lower is not a problem and going higher is only a problem if you approach 1Mohm.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline thegage

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Reply #2 on: May 01, 2016, 02:06:24 PM
Thanks! I haven't built a Bottlehead kit since a S.E.X. amp a number of years back (and a Foreplay and Seduction before that), but I bought a new MC cartridge recently with a slightly odd output (0.8mV) that doesn't quite match my current phono stage, and it seems like a good excuse for a new project.

John K.


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