Akai AM 2850 Service Manual

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Akai AM 2850 Service Manual

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Page 2

MODEL AM-2850/2950 M-

Audio Mute -20 dB

MISCELLANEOUS

Semiconductors Transistors: 43, Diodes: 31, 1C: 1
Power Requirements 120V, 60 Hz for US and Canada

220V, 50 Hz for Europe
110/220/240V, 50/60 HZ Switchable
for the other countries

Dimensions 440(W) X 170(H) X 430(0) mm
(17.3 X 6.7 X 16.9 inches)
Weight 15.7 kg (34.5 lbs)

* For improvement purposes, specifications and design are subject to change
without notice.

2. Model AMA2950
POWER AMPLIFIER SECTION

Rated Output Power
2~Channels Driven 130 watts per channel, minimum RMS, at 4 ohms

from 20 to 20,000 Hz with no more than 0.06 %
total harmonic distortion.
120 watts per channel, minimum RMS, at 8 ohms
from 20 to 20,000 Hz with no more than 0.06 %
total harmonic distortion.
2 X 180 watts into 4 ohms at 1 kHz, with no
more than 0.06 % total harmonic distortion.
2 X 140 watts into 8 ohms at 1 kHz, with no
more than 0.06 % total harmonic distortion.

Power Bandwidth (IMF) 10 Hz to 40 kHz/8 ohms
(Total Harmonic Distortion: 0.06 %)

Signal to Noise Ratio (IHF)

PHONO Better than 80 dB
AUX Better than 100 dB
Residual Noise -˜ Less than 0.5 mV at 8 ohms
Channel Separation (INF)
PHONO Better than 50 dB at 1,000 Hz
Damping Factor More than 50 (1 kHz, 8 ohms)
Output Speakers A, B, C (4 to 16 ohms)/A+B, A+C, B+C (8 to 16 ohms)
Headphone 4 to 16 ohms

PREAMPLIPIER SECTION

Input Sensitivity/Impedance

PHONO PHONO 1: 3 mV/33/47/100 kohms,
PHONO Z: 3 mV/47 kohms

AUX 150 mV/100 kohms

TUNER 150 mV/IOO kohms

TAPE MONITOR PIN: 150 mV/IOO kohms,
DIN: 150 mV/lOO kohms

MAIN IN PIN: 1V/47 kohms

Output Level/Impedance
TAPE REC PIN: 150 mV/l kohms,

DIN: 30 mV/30 kohms
PRE OUTPUT 1V/47 kohms