Hi every body.
I need Origin circuit of Bruce Berman about Pre amp using 76/6SN7, that was post in Sound Practice 13.
Thank you so much
my email : e.hopthu-at-gmail.com
I need Origin circuit of Bruce Berman about Pre amp using 76/6SN7, that was post in Sound Practice 13.
Thank you so much
my email : e.hopthu-at-gmail.com
a litle description
76 is loaded with a 33k restsitor biased with an unbypassed 1k5 cathode resistor, direct coupled to 1/2 a 6sn7 which is a cathode follower loaded by a 20k cathode resistor.
There is a 1uF dc protection cap on the output and a 1 meg shunt resistor to maintain stability should it be disconnected from the power amp while it is turned on.
B+ is 400v, there is no decoupling between V1 and V2 but the two channels are seperated by a pair of final LC stages.
It is very elegant and as an early design has been borrowed from many fold.
76 is loaded with a 33k restsitor biased with an unbypassed 1k5 cathode resistor, direct coupled to 1/2 a 6sn7 which is a cathode follower loaded by a 20k cathode resistor.
There is a 1uF dc protection cap on the output and a 1 meg shunt resistor to maintain stability should it be disconnected from the power amp while it is turned on.
B+ is 400v, there is no decoupling between V1 and V2 but the two channels are seperated by a pair of final LC stages.
It is very elegant and as an early design has been borrowed from many fold.
I doubt if anybody will post it because it's copyrighted material from Sound Practices.
If you want something similar, search for JE Labs 76 pre-amplifier which is derived from Berman's.
If you want something similar, search for JE Labs 76 pre-amplifier which is derived from Berman's.
Thanks Dady ! 😀
What is about Power supply ? and do you have drawing ? can you send it for me ?
Thank so much.
What is about Power supply ? and do you have drawing ? can you send it for me ?
Thank so much.
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