6j5 trasformer coupled driver/splitter - diyAudio
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Old 8th December 2006, 08:02 PM   #1
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Join Date: Sep 2003
Location: Italy
Default 6j5 trasformer coupled driver/splitter

Hi All..

I want realize a push pull drived by a 6j5 ...transformer coupled..

How to choose the best primary impedance?

The secondary will drive directly the grids of the 6v6..

I'm in trouble how to calculate the impedance on primary.

Can anyone help me?


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Old 8th December 2006, 08:30 PM   #2
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Join Date: May 2005
Location: near Duesseldorf
Important is the primary inductance in relation to plate resistance of the tube (for the bass rollof), I calculate >10 Henrys for 1 kOhm of plate resistance (for the 6J5 more than 70 Henrys).

Regards Andreas
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Old 9th December 2006, 08:42 PM   #3
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Join Date: Sep 2003
Location: Italy
Default thanks for help


Thanks for your help..so have some formulas to send me?

What do you think about ther LL 1660..? Is suitable for this application.?

Thanks again,

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Old 10th December 2006, 09:15 AM   #4
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Join Date: May 2005
Location: near Duesseldorf
Default Re: thanks for help

Originally posted by Maurizio
...What do you think about ther LL 1660...
The LL1660 in connection 4:2,25+2,25 with the 6J5 or the LL1660S in connection 2,25:2+2 with two 6J5 or two systems of the 6SN7 in parallel.

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