Accuphase M-60

The Accuphase Monophonic Power Amplifier Model M-60 was completed after extensive engineering efforts in which perfection was sought without compromises. Monophonic design was chosen to completely eliminate any possibility of inter-channel interferences from power supply circuit and wirings, and also to feature a handy weight so that it can be handled even by one person. The M-60 provides 19" rack mounting facilities and a cannon type input terminal for studio monitor or PA system applications.

Features:

Monophonic Design Advantage for No Inter-Channel Interference

Every Stage Push-Pull Driven for Greatly Improved Stability, Linearity and Dynamic Range

Heavy Duty, large Energy Power Supply

Logarithmic Scale Peak level Output Meter

Subsonic Filter to Eliminate Noise below Audible Range

1 dB step Attenuator

Cannon Type Input Connector

Provision for Ventilation Fan Installation

Specifications

Power Output (from 20Hz to 20 kHz, 0,1% THD):

450 watts, min. RMS at 4 ohms,

300 watts,min. RMS at 8 ohms,

150 watts, min.RMS at 16 ohms

THD (from 20 Hz to 20 kHz at any power output from 1/4 watt to rated power):

4 ohms; 0,1% max.

8 ohms; 0,1% max.

16 ohms; 0,1% max.

Intermodulation Distortion: 0,1% at rated power output (for any combination of frequencies between 20 Hz and 20 kHz)

Frequency Response:

20 Hz - 20,000 Hz; +0, -0,2 dB at rated power output

2 Hz - 90,000 Hz; +0, -3 dB at rated power output

Damping Factor: 45 (at 8 ohms load, 20 - 20,000 Hz)

Rise Time: 3 μSec.

Slewing rate: 25 V/μSec.

Input Sensitivity and Impedance: (2,0 Volts, 100 kohms, for rated output at the max. level control)

Hum and Noise: 100 dB below rated output

Output Load Impedance: 4,8 and 16 ohms

Subsonic Filter: cutoff frequency 17 Hz, 18 dB/oct.

Power Level Meter: switchable for Volume Level and Peak level, calibrated to read 0 dB - 300 watts into 8 ohms load and capable of directly reading down to -50 dB (3 mW)

Attenuator: precision, 1 dB stepping type

Power Requirement: 100, 117, 220, 240 V, 50/60 Hz

Power Consumption: 65 watts at zero signal output;

540 watts at rated otput (8 ohms load)

800 watts at rated output (4 ohms load)

Semiconductor Complement: 47 transistors, 51 diodes, 3 IC's

Dimensions (W x H x D): 482 x 170 x 345 mm (19" x 16-11/16" x 13-9/16")

Weight net: 27 kg (59,4 lbs)