AMPLIFICATEUR ACOUSTIC RESEARCH MODEL W / VINTAGE AMPLIFIER

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 Ohms

50 Watts RMS/Channel Into 8 Ohms

30 Watts RMS/Channel Into 16 Ohms The Amp Can Deliver These Power Levels At Any Frequency From 20 Hz To

20 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, Adjustable

High-Level Inputs: 200 MV RMS Input Levels Are Those Which Drive The Amp Output To Rated Power With

The Volume Control At Maximum.

Input Facilities:

Magnetic Phono, Tuner, Tape, And Output For Tape Recording.

Damping Factor:

8 To 20 Into 4 Ohm Loads

16 To 40 Into 8 Ohm Loads

32 To 80 Into 16 Ohm Loads Lower Figures Apply At 20 Hz, Higher Figures Apply From 75 Hz To

20 KHz. Factors Include AGC-3 Speaker Fuses.