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History of the manufacturer  

S Eletroacústica (LE-SON); São Paulo

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Name: S Eletroacústica (LE-SON); São Paulo    (BR)  
Abbreviation: s-eletro
Products: Model types Others
Summary:

S Eletroacústica
Rua Jorge Americano 377, São Paulo / SP

Brand: LE-SON

Manufacturer of LE-SON branded components for hi-fi audio, such as ceramic and magnetic pickup cartridges, diamond and sapphire replacement tips, amplifier kits, turntables (record players), speaker box, microphones, phones, etc.

History:

During WWII a group from the Escola Politécnica (São Paulo University) were developing crystals for sonar application together with the Brazilian Navy. After the war, one of the researchers, Dr. Paulo Bittencourt, founded S Eletroacústica for the production of pickup cartridges and microphones.

Later on, many other products were added to the company portfolio. Most of the products were "LE-SON" branded.

This manufacturer was suggested by Antonio Rabitti.


Some models:
Country Year Name 1st Tube Notes
BR  57 Record Player Al-Fid     Hifi belt drive record player   Auto stop at end of the disc, ... 
BR  80 Cápsula magnética MC1   Magnetic cartridge moving magnet type Two channel stereo Le-Son branded 
BR  70 Cápsula cerâmica CP3-L   Ceramic cartridge for record player pickup. Le-son branded 
BR  75 Agulha AG-180   Replacement assembly for magnetic pickup - stereo. Diamond tip 
BR  70 Cápsula cerâmica C3D-X   Ceramic cartridge for record player pickup. Le-son branded 
BR  70 Cápsula cerâmica C3D-W   Ceramic cartridge for record player pickup. Le-son branded 
BR  70 Cápsula cerâmica 3102   Ceramic cartridge for record player pickup 
BR  60 Stereo-Sonic   Stereo radio with record player MW = 535 to 1620 kHz SW1 = 2.2 to 7 MHz SW2... 
BR  70 Cápsula cerâmica EV-181   Ceramic cartridge for record player pickup. Le-son branded 
BR  70 Cápsula cerâmica CP3-X   Ceramic cartridge for record player pickup. Le-son branded 
BR  70 Cápsula cerâmica CP3-W   Ceramic cartridge for record player pickup. Le-son branded 
BR  70 Cápsula cerâmica C3D-A   Ceramic cartridge for record player pickup. Le-son branded 

[rmxhdet-en]

Further details for this manufacturer by the members (rmfiorg):

tbn_br_seletro_1975_pic.jpg
Stereo cartridge line. In the detail the sapphire polishing machines, for tips production. From Rádio e Televisão Magazine, 1960tbn_br_seletro_1960_factory1.jpg
Detail of the rotor balancing machine, in the record player production line From Rádio e Televisão Magazine, 1960tbn_br_seletro_1960_factory2.jpg
Final control of stereo cartridge production. Frequency response checked from 50Hz to 10kHz From Rádio e Televisão Magazine, 1960tbn_br_seletro_1960_factory3.jpg
View of the belt drive record player assembly station From Rádio e Televisão Magazine, 1960tbn_br_seletro_1960_factory4.jpg
Dehumidified room for ceramic elements assembly From Rádio e Televisão Magazine, 1960tbn_br_seletro_1960_factory5.jpg
S Eletroacústica factory, toolmaking section 1960tbn_br_seletro_1960_factory6.jpg
S Eletroacústica factory, press parts manufacturing 1960tbn_br_seletro_1960_factory7.jpg

  
rmXorg