Luxman L-31

Circa
1 9 7 6 c.1976
1 9 7 7 1977

The L-31 is the more powerful and slightly later sibling of the L-30 ; team-wise, it also fits the T-33 tuner.

Hardware- and circuit-wise entirely identical :
dual-rail differential driver power supply, low-noise preamp, 2-stage DC with PNP/NPN phono stage, an impressive damping factor and cutie styling alternating aluminium and plastic knobs on a very elegant aluminium front surrounded by a luxurious rosewood enclosure.

The scripting is however very lightly silkscreened - beware when cleaning it up.


Nudies aplenty here.

Luxman L-31, image 1
Luxman L-31 specifications
Title Value
Power output : 2x 38W (8 Ohm, both channels driven)
2x ??W (4 Ohm, both channels driven)
THD : < 0,05% (8 Ohm, 32W output)
IMD : < 0,1% (8 Ohm, 32W output)
Power bandwidth : 10Hz...50Khz (-3dB, 0,1% THD)
Frequency response : 15Hz...50Khz (-1dB)
Inputs : 2,6mV / 50kOhm (phono)
150mV / 60kOhm (tuner, aux 1 & 2, monitor)
S/N ratio : > 64dB (phono 1 & 2)
> 83dB (lines)
Residual noise : -87dB
Damping factor : > 90 (8 Ohm)
Bass control : NF control
Treble control : NF control
High cut filter : 6dB/octave above 7Khz
Low cut filter : 6dB/octave below 70Hz
Loudness switch : ?
Semiconductors : 27 transistors
8 diodes
2 Zener
1 LED
PC : 170W max.
Dimensions : 44 x 16 x 22,5cm
Weight : 7kg.
Luxman L-31 : 0 topic
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page online since : april 2012
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