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ACCUPHASE PRO-5

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Technic details

Specifications

Type:
Stereo Power Amplifier
[Rated output power (20Hz to 20kHz)]
Stereophonic operation (Both channels driven):
600W + 600W (2Ω load)
420W + 420W (4Ω load)
250W + 250W (8Ω load)
125W + 125W (16Ω load)
Monophonic operation (Bridge connection):
1200W (4Ω load)
840W (8Ω load)
500W (16Ω load)

[Total harmonic distortion]
Stereophonic operation (Both channels driven):
0.02% (2Ω load)
0.01% (4 to 16Ω load)
Monophonic operation (Bridge connection):
0.02% (4Ω load)
0.01% (8 to 16Ω load)
I.M. distortion:
0.003% (SMPTE-IM)
[Frequency response:
20Hz to 20kHz, +0 -0.2dB (Rated output, input attenuator at Max.)
0.5Hz to 150kHz, +0 -3dB (1W output, input attenuator at Max.)
0.5Hz to 120kHz, +0 -3dB (1W output, input attenuator at -6dB)
Gain:
31.2dB (Stereophonic operation)
37.2dB (Monophonic operation)
Load impedance:
2 to 16Ω (Stereophonic operation)
4 to 16Ω (Monophonic operation)
Damping factor (8Ω load at 50Hz):
200 (Stereophonic operation)
100 (Monophonic operation)
Input sensitivity (8Ω load):
0.775V 100W output (Stereophonic operation)
0.388V 100W output (Monophonic operation)
1.23V Rated output (Stereo / Monophonic operation)
Input impedance:
20kΩ (Unbalanced input)
40kΩ (Balanced input)
S / N ratio: (A-weighted, input shorted):
115dB (Rated output)
Output meters (LED display):
8Ω load, 125W = 0dB
-22 / -17 / -12 / -9 / -6 / -4 / -2 / 0 / +2 / +4 dB
Input attenuator:
0 to -20dB in 1dB steps, -∞
Cooling method:
Forced-air cooling method (Front panel air intake louvers, rear panel exhaust)
Two-speed cooling fan (Automatically operates at high speed when temperature over 80˚C detected in heat sink)
Semiconductors used:
Transistors x 72
FET’s x 8
IC’s x 6
Diodes x 86
Power requirements:
AC 100 / 117 / 220 / 240V, 50 / 60Hz
Power consumption:
145W (No signal)
840W (At rated output into 8Ω load)

Dimensions (W x H x D):
482.5 x 190.5 x 381mm
Panel height:
Four units
Panel size (W x H):
482.5 x 176.5mm
Rack mounting:
Can be mounted in standard 19” rack
Weight:
27.3kg (Net)
32.5kg (In shipping carton)

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