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TT Tube Reverb Problem

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stephan61:
Hi Lionel,
Thats indeed what Andreas pointed out, there might be too much voltage drop between B2 and B3 due to current draw caused by a wrong resistor value somewhere in the circuit.  Double check of all parts may be helpful.

regards Stephan

smid:
Hi Lionel,

I just had a look at the photos from the project page. There ist looks like they used the 1k.  Do you get the >300V only with the power-supply and no circuit connected ? That would be normal, since there is no load on the power-supply.  Connect the circuit with tubes, you should get a significant drop.

Andreas

LP:
It is that you make think to me because of your previous post, when i put the 1k resistor, i didn't wire the circuit, because i'm worrying by the >300vdc current.
I didn’t think to check the tube town project photos  :facepalm:
Tomorrow, i go to put a 1k resistor (if i found one another in 2w, i lost mine  >: ).
But sure it'll works fine.
Thanks a lot andreas  :bier:

LP:
Hello,
I put the 1k r6 resistor, it works perfectly, i obtain 275v on B3, and no hiss :topjob:

The time of the reverb is good, but however, i not find it deep enought, i would like mixer let only the reverb signal go out when i put it at 12.
 How can i modify it for that?

Thanks.

smid:
You could try a larger mix pot, like 500k, that might separate the signals a bit more, but due to the general architecture there will always be a small amount of dry signal come through the pot.
You can make a test and shunt the dry signal to ground, to estimate, wether the pure reverberated signal sounds the way you like.

Andreas

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