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Tubelab Discussion and support of Tubelab products, prototypes and experiments

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Old 14th December 2010, 05:18 AM   #1
Green77 is offline Green77  Sweden
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Location: MJOLBY
Default Tone control in a TubelabSE?

Hi all!

Is it possible to ad a tone control in a TubelabSE?

I have looked at this one. And was thinking to build it in the same chassie as the amp.

Click the image to open in full size.

And do it like this:

CD in --> Tone control --> Volum --> AMP

Any problems?

Thanks //Daniel
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Old 14th December 2010, 06:53 AM   #2
artosalo is offline artosalo  Finland
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I have used basically same circuit and it works great. Below is my version. It has also a voltage amplifying stage, which is in most cases not needed. Also the cathode follower - as in your example - is not necessary if the used signal source is having low impedance device like CD-player etc.

Very good feature of this circuit is - compared with passive one's - is that one can use linear potentiometers. Also the "flat" response is exactly at middle position of the pots.

Click the image to open in full size.
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