Hitachi HMA 9500 Mk2 Service Manual

Page 1

SERVICE MANUAL 533m No.209

Francais

SPECIFICATIONS

Circuit system 2-stage differential amplifier, allastage
directcoupled power MOS FET
Pure complementary OCL circuit (with
built-in super linear circuit)

Power output

(both channels driven) 120 W +120 W (1 kHz, 4 ohms)
100 W +100 W (5 Hz ~ 100 kHz,
8 ohms)
120W +120W (5 Hz -20 kHz,
8 ohms)

Total harmonic

distortion 0.01% (5 Hz - 100 kHz, rated power
output, 8 ohms)
0.005% (5 HZ - 20 kHz, rated power
output, 8 ohms)
0.002% (1 kHz, rated power outpm,
8 ohms)
0.002% (1 kHz, 50 W power output,
8 ohms) ,

Cross modulation
distortion
(60 Hz: 7 kHz = 4 2 1) 0.003% (rated power output, Sohms)
0.003% (50 W power output)
Frequency response DC - 100 kHz 2&5 dB (direct coupling)
DC w 300 kHz 1} dB (direct coupling)
3 Hz _300 KHz t, dB
(condenser coupling)

Input sensitivity]

impedance 1 V/5O kohms
S/N ratio
(input shorted) 120 dB (IHFvA)
Crosstalk
(input shorted) 85 dB (5 Hz - \DO kHZ)
95 dB (5 Hz - 20 kHz)
Damping factor 70 (5 Hz - 20 kHz)
Load impedance 4 - 16 ohms
Power requirements ~220 V, 50 Hz (for Europe)
~24O V, 50 Hz (for UK.)
Power consumption 950 W
Dimensions 435 (W) x 192 (H) x 410 (D) mm
Weight 29 kg

Specifications and design are subject to change without nozice for
improvement.

FEATURES

1 Wide bandwidth and low distortion design for the best in sound

quality

2. Super linear circuit

3. DC ampiiiier configuration allowing precise waveform trans-
mission

4. independent left/right power supplies in monophonic amplitiet
tradition

5. Highly reliable protection circuits

6 Streamlined performance-oriented layout and quality desim

STEREO POWER AMPLIFIER

August 'I 980

MC-Service