Re: Se 2a3 golden era
in february 2020 I had the pleasure of mounting a SE 2A3 without compromise on a high-end black aluminum chassis
the transformer feeds the GZ32 valve, our CIFTE nibs, the smoothing choke and the head oil condos and the filtering JJ are common to both channels, then a 10H 100mA choke and a 2X100uF 500V F £ T condo per channel for conventional power supply. Y.
the 2A3 are heated alternately with a hum balance reostat which can also be measured in AC by the rca TPs at the back at the same time as the cathode voltage in DC
the 1: 1 IT is loaded by triode 6C45P-E.
the supply resistances are with wire wound the cathode resistors 2X2 1500ohm 10W and the 220ohm 5W wound audiogold ceramic non inductive non magnetic
the cathode capacitors of the 2A3 oil paper 30uF 160V and BC 100uF100V
high quality 3K5 42H 135mA output transformers
the sound is just superb beautiful
in february 2020 I had the pleasure of mounting a SE 2A3 without compromise on a high-end black aluminum chassis
the transformer feeds the GZ32 valve, our CIFTE nibs, the smoothing choke and the head oil condos and the filtering JJ are common to both channels, then a 10H 100mA choke and a 2X100uF 500V F £ T condo per channel for conventional power supply. Y.
the 2A3 are heated alternately with a hum balance reostat which can also be measured in AC by the rca TPs at the back at the same time as the cathode voltage in DC
the 1: 1 IT is loaded by triode 6C45P-E.
the supply resistances are with wire wound the cathode resistors 2X2 1500ohm 10W and the 220ohm 5W wound audiogold ceramic non inductive non magnetic
the cathode capacitors of the 2A3 oil paper 30uF 160V and BC 100uF100V
high quality 3K5 42H 135mA output transformers
the sound is just superb beautiful
Attachments
version on XLR balanced input by transformer 1: 1 10K / 10K double shield of SE 2A3 class A
the two independent now 20H 100mA filter chokes go up on the upper plate
the valve a magnificent Svetlana from 1964 5U3C black plate
follow 4uF630V PIO and 10uF500V PIO before the self 10H200mA
the Lachowski 3K2 toroidal core output transformer with shielding is inside
2A3 EIZZ Japan sockets on silent blocks as always because AC heating
for absolute silence in background noise
this amp being intended for the high spectrum register the linearity is exemplary at more than 40Khz
although the bass remains perfectly reproduced
the two independent now 20H 100mA filter chokes go up on the upper plate
the valve a magnificent Svetlana from 1964 5U3C black plate
follow 4uF630V PIO and 10uF500V PIO before the self 10H200mA
the Lachowski 3K2 toroidal core output transformer with shielding is inside
2A3 EIZZ Japan sockets on silent blocks as always because AC heating
for absolute silence in background noise
this amp being intended for the high spectrum register the linearity is exemplary at more than 40Khz
although the bass remains perfectly reproduced
Attachments
