Hi!
Finished 1st of 4 1081 clone units. (ten81 pcbs)
Everything seems to work fine.
Followed Neve ground schem, and any hum present . Anyway, unit is more noisy when eq is engaged: "...Output noise better than - 80dBm at all line input levels." Biased a la Igor, 250/280mV at a 10ohm resistor bewtween B+ and pin6 of BA340.
Will post some pics.
Here is the problem. When I power or shut down the unit, from a 24vpsu (psu vintage design 6/24/48v) mounted outside, there is a big audio peak, as big as it peaks my orion 32 (more than 20dBu input level)... Can it damages my sound card? How can I avoid it?
I'm ready for helping other builders if it necessary!
thx
Finished 1st of 4 1081 clone units. (ten81 pcbs)
Everything seems to work fine.
Followed Neve ground schem, and any hum present . Anyway, unit is more noisy when eq is engaged: "...Output noise better than - 80dBm at all line input levels." Biased a la Igor, 250/280mV at a 10ohm resistor bewtween B+ and pin6 of BA340.
Will post some pics.
Here is the problem. When I power or shut down the unit, from a 24vpsu (psu vintage design 6/24/48v) mounted outside, there is a big audio peak, as big as it peaks my orion 32 (more than 20dBu input level)... Can it damages my sound card? How can I avoid it?
I'm ready for helping other builders if it necessary!
thx