Amplificateur Acoustic research Model W.

Il fonctionne parfaitement.

Quelques rayures et taches (voir les photos).

2 Choses a noter :

Le transfo fait un peu de bruit car il manque le caisson en bois qui fait office d'isolation.

Il y a un léger bruit de masse quand le volume est a zero mais que l'on entend plus une fois le volume monté.

Specifications :

Power Output:60 watts RMS/channel into 4 ohms50 watts RMS/channel into 8 ohms30 watts RMS/channel into 16 ohms The amp can deliver these power levels at any frequency from 20 Hz to20 kHz, without exceeding the distortion specs, both channels driven.Distortion: IM (SMPTE, 60 and 7 kHz, 4:1) less than 0.25%THD less than 0.5%Distortion figures include the phono preamp.Frequency response:£1 db, 20 Hz to 20 kHz, with tone controls flat.Signal/Noise Ratio:Phono input: -57 db (ASA. "C" weighted)High-level inputs: -75 db (ASA "C" weighted)Ratios are with volume control at maximum, with shorted inputs.Input Impedance:Phono inputs: 50k ohms, shunted by 20 pF or less.High-level inputs: 150k ohms.Input Sensitivity:Phono inputs: 2 to 5 mV MS, adjustableHigh-level inputs: 200 mV RMS Input levels are those which drive the amp output to rated power withthe volume control at maximum.Input Facilities:Magnetic phono, tuner, tape, and output for tape recording.Damping Factor:8 to 20 into 4 ohm loads16 to 40 into 8 ohm loads32 to 80 into 16 ohm loads Lower figures apply at 20 Hz, higher figures apply from 75 Hz to20 kHz. Factors include AGC-3 speaker fuses.

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