DC coupled 71A amp- its alive but noisy

vetmed · 4036

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Offline braubeat

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Reply #15 on: December 26, 2013, 04:58:33 AM
I meant to say heaters instead of filaments.

Michael


Offline vetmed

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Reply #16 on: December 26, 2013, 06:06:06 PM
Lot less noisy now, grounded the driver stage heater and most of the noise is gone. I'm sure what's left can be attributed to less than optimal wiring layout which I will fix as soon as I can stop listening ;D Truly "alive" sound, something I think only comes with DC coupling. Thanks for everyone's help but especially Braubeat and PB 8)

Robert Lees

Offline vetmed

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Reply #17 on: December 26, 2013, 06:10:59 PM
Sorry image wrong side up and don't know how to fix it :o

Robert Lees

Robert Lees

Offline braubeat

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Reply #18 on: December 28, 2013, 05:11:45 AM
Don't underestimate the 71a tube as far as the "alive" sound is concerned. That tube is awesome with the right speakers.

Michael


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