The Lenco L 4000 Music Center was introduced in mid 1975. The electronics was manufactured by Südfunkwerke 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

RIAA-Pre-Amp

Output power:

Distortion:

S/N ratio (weighted):

Frequency response:

Input sensitivity DIN socket:

FM Frequency Range:

2 x 20 W into 4 Ω

< 0.3 % @ 1 kHz, 2 x 20 W

>55 dB (Pick-up)

20 Hz - 40 kHz

350 mV (TAPE)

87.5 - 108 MHz