Hitachi HA-7700 Serviceanleitung

HA-7700
English
Deutsch
Frangais
No. 160
SERVICE MANUAL
SPECIFICATIONS
POWER AMPLIFIER SECTION
Power output 65 watts minimum RMS per
PREAMPLIFIER SECTION
Input Sensitivity/Impedance
: A Phono 1, 2: MM 2.5 mV
channel, both channels driven into 8 ohms
(100 ohms, 22 kohins,
load from 20—20,000
Hz with no
more
47 kohms, 100 kohms)
than 0.02% total harmonic distortion. MC 250 uv
(4 ohms, 1 kHz,0.01% THD): 53 watts + 53 watts
Power Band Width:
Frequency Response
Direct Coupling:
Condenser Coupling:
Total Harmonic Distortion
(20 Hz—20 kHz,
8 ohms from MAIN IN)
at rated output:
at 1/2 rated output: .
Intermodulation Distortion
(60 Hz: 7kHz,4: 1)
at rated output:
at 1/2 rated output;
Input Sensitivity/Impedance:
Input Terminals:
Output Terminals:
Signal-to-Noise Ratio
IHF , Short-Circuited,
A network, Rated Power:
Damping Factor
5 Hz—100 kHz
(0.03% THD)
DC--100 kHz +0,-14dB
4 Hz (6 dB/Oct)
0.02%
0.005%
0.008%
0.003%
1 V (47 kohms)
Direct Coupling/
Condenser Coupling
(Selected by Rear Panel
Switch)
A or B Speakers
115 dB
1 kHz, 8 ohms, 1/2 rated output 60
Channel Separation
1 kHz, 8 ohms.
Speaker Impedance:
Phones Impedance:
STEREO AMPLIFIER
75 dB (4.7 kohms short)
4 ohms — 16 ohms
More than 4 ohms
Phono overload
(1 kHz,0.01% THD)
Phono 1, 2:
Output Level/Impedance
Pre-out:
Tape REC out 1, 2:
Maximum Output Levels
(0.01% THD)
Pre-out:
Frequency Response
Phono:
Tuner, AUX:
Signal-to-Noise Ratio
(IHF, Short-Circuited ,
A Network, Rated Power)
Phono 1, 2:
Tuner, AUX:
Tape Play 1, 2:
[Tape play 2 (DIN):
150 mV (47 kohms)
(Except for US. A. &
Canada) |
MM 300 mV
MC 30 mV
1 V (600 ohms)
150 mV (600 ohms)
[Tape REC out 2 (DIN):
50 mV (80 kohms)
(Except for US. A. &
Canada) ]
More than 7 V-
(MUTE: OFF)
20 Hz—20 kHz,
+0.2dB
10 Hz—100 kHz, +0
-2.5 dB
MM 86 dB, MC 68 dB
100 dB
100 dB