The Lenco L 4000 Music Center was introduced in mid 1975. The electronics was imported from Germany. It was assembled in Switzerland and mainly distributed in Switzerland through ExLibris. The FM-Tuner has 5 pre-set’s, LW, MW, and SW bands for AM.

First series were equipped with the L 65, later units had the L 84 record player. ExLibris sold it for CHF 1’250.— including the dust cover and 2 Lenco 2440 speakers.

Lenco L 4000 / L 65

Lenco L 4000 / L 65

The LW range has a switchable BW filter for 9 kHz and 30 kHz. It could be switched with the MONO Button. It is labeled with MONO / TR

Lenco L 4000

Power stage

Lenco L 4000

Part of the electronics

Lenco L 4000

Stereo Decoder - FM-IF - AM-Part

Lenco L 4000


Output power:


Input sensitivity DIN socket:

2 x 22 W into 4 Ω

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Last Update: 25.12.2021


- added the Lenco M-100 cartridge


- added technical information for the C 2003 tape deck