model employ a low impedance type output transformer D95659
made in 1935, the silver one in picture. Old we43a amps instead employed 500
Ohm output + 7a autotrans. 80 kg weight.
amp , dry sound , frequency response is extended.The most correct amp I ever
listen. Better than any 300b amp I owned.
tubes are we242c : the sound is completely different
in respect of Rca 211a. We242c is dry and clean.
amplifier in 700a cabinet.
preamp was a photoelectric cell amplifier. In my system is employed as line
amp and driving amp for we43a. I brought b+ to 140v from 90v in order to enable
we49 to drive we43a.
we264c direct heated tubes , 246a
interstage trans - not employed in my amp , 127c
output trans for 500 ohm output.The amp is completely suspended on coil springs
that acts also as current conductors.
best , top , results with this amp , filaments must be supplied by a Tungar
is extremely smooth and natural , a bit warm but always extremely correct
Phono preamp , Tungar psu distribuition and control , preamp psu.
preamp : Langevin 103a module with we348a
penthode + rc RIAA + we352a. Langevin 103a is we116
clone. the input trans , 402a , is a clone of
we618a input trans. Langevin had a special agreement
with WE for manufacturing exhactly the same amps.This Langevin mc transformer
is simply wonderful : flat response , no resonances. We348a mesh plate is
incredible too : penthode connected sounds like a triode.
regulation : the box has an ampmeter and reostat in order to regulate manually
the current supplied by Tungars. Tungar psu has the tendency to stabilize
after 1 hour.
employs a pair 4b26 tubes and in my system supplies current to speaker field
coils ( we555 + 597 ) and to phono and we49 preamps filaments.
influence on sound is really huge. Sound becomes smooth , natural , without
the resonances and harshness given by solid state psu. A must.
1940. this amp is pp 6F6 , phase splitting is done by an interstage transformer.
It's sound it's really a surprise : wonderful sound and very modern too. 1940
broadcast quality. I employ it with my we753c speaker.
amp system : Motiograph Ma7505 converted to we300b
PP.This amp still remains an excellent solution for we300b without being involved
in expensive WE amps.Same aesthetic and quality than WE.
Electric and Motiograph
previous Western Electric amp system.
left to right : WE universal base with WE49 amp
, control box + 702a volume control (movies only)
, WE43A amp , Motiograph Tungar psu
Electric 46c amp
employ we205d tubes but Altec Silvanya 1276 that
are mainly 2a3 tubes but with UV socket and 4,5V filament.
is dropped to 300V and the rectifying tube is Rca83V indirectly heated
and 83V tubes the 46c has a thicker , more powerful sound
as it is, the we46c is a quite dull sounding amp : I improve the frequency
response of 46c by bypassing the input transformer and first we264c stage.