Another wonderful beepre (and 6BQ5 tube question)

kaleb · 1550

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Offline kaleb

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on: March 11, 2015, 01:15:29 PM
I finally finished my Beepre build ordered back in Oct  (somehow there was never quite time at home with an 11month old  :) ).

Similar to this thread, I found A1/B4 resistances climbing into the 500Ohm-1kOhm range instead of dropping to 4Ohm:
http://bottlehead.com/smf/index.php?topic=7522.msg72511#msg72511 [nofollow]

I pushed ahead to voltage measurements. All are in spec except for C3/D3 on the nine-pin sockets. I measure 9.2V on C3 and 4.5V on D3. The high value moves with the 6BQ5 if I swap them.

It sounds beautiful, but does 9.2V at C3 on one of the 6BQ5's indicate a problem I should replace the tube for?

Thanks in advance! Kaleb
« Last Edit: March 11, 2015, 01:27:46 PM by kaleb »


Offline Paul Birkeland

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Reply #1 on: March 11, 2015, 04:14:19 PM
The important thing about the C3 voltage is that it's above 3V and below 32V, but otherwise it isn't very critical.

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline kaleb

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Reply #2 on: March 11, 2015, 04:40:22 PM
Good news. Thank you! The beepre is running great - only a few hours of burn in so far and it is magic.

Kaleb


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