Lenco Pre-Amplifier VV6

The VV6 is Lenco’s first RIAA pre-amplifier constructed to fit on the underside of the record player. It looks as if there are tubes under the aluminum caps but they are to shield the sensitive electronics from the mains transformer and synchronous motor magnetic field.

The first version of the Lenco VV6 was built with a germanium transistor.

Unfortunately I didn’t know that when I took this photograph and I didn’t note down the type of the transistor! At least I managed to draw the schematic diagram (see below).

This one here was the third version, built until it was replaced in 1967 by the VV 7.

Under the aluminum shielding cover was a single silicon transistor and all the elements for a RIAA equalisation.

Inofficial drawing, for private use only

This schematic from the third version is the only one in the internet so far.

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Last Update: 02.06.2021

29.05.2021

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02.06.2021

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