Technics SU-7600 Stereo Integrated Amplifier
$400 (around the 1975 time)
Description thanks to Audio-database
The stereo Integrated Amplifier which carries perfect discrete power amplifier.
The power amplifier part serves as a discrete scheme which uses a low noise and a low-noise transistor.
While circuitry serves as a whole page hardwired-connection differential-amplification perfect complimentary OCL circuitry, inserting an emitter-follower in the subsequent stage of a differential amplification and making the matching with a subsequent stage good, the distortion at the time of a small signal is decreased.
IC selected carefully was used especially for the equalizer circuitry, and a low noise and high stability are realized.
Circuitry is made into a three-step direct coupling system.
A tone control scheme has few surges of a frequency, and it has succeeded in enlarging transition width of a tone.
The electric-field capacitor of a power circuit is the high resisting pressure of 40V, and a 10,000-micro F mass type is used for it.
The step type of 41 points which can be tuned finely correctly is used for a master level control.
It had the double protection network with a relay and a fuse, and it has prevented damaging a transistor and a speaker also in an emergency.
Moreover, the time constant was given to the relay circuit and the shocking sound at the time of the power source ON is prevented.
A two-set interconnection is possible for a tape deck, and dubbing of 1->2 is possible at an operation of a thumb.
The speaker can connect two lines.
The effective loudness switchpoint at the time of a small sound volume and the high light filter from which the noise of loud sounds, such as a scratch noise, is removed are also carried.
There was a wood case as an option.
(from a upper left-hand)
- 41-point master control
- Power transistor
(from a upper-right)
- 10,000-micro F mass quantity resisting pressure electrolytic capacitor
- UNSWITCHED power receptacle
- UNSWITCHED power receptacle
- Two speaker terminations
Rating of a mode
FormStereo Integrated Amplifier
<Power amplifier part>
Effective output (both ch(es))1kHz:55W+55W (4ohms)
43W+43W (8 ohms)
20Hz - 20kHz :50W+50W (4 ohms)
41W+41W (8 ohms)
THD0.2%
Output bandwidth (both channel 8ohm)5Hz - 65kHz-3dB
Remains noise0.6mV
Dumping factor40 (8 ohms)
Conformity load intensityMain or Remote: 4ohms - 16ohms
Main+Remote: 8 ohms - 16 ohms
<Preamplifier part>
Input sensitivity/impedancePhono: 2mV / 47kohm
Tuner, AUX:150mV /, 47kohm
The Phono maximum input (1kHz, RMS)120mV
SN ratio (IHF-A)Phono:72dB
Tuner, AUX: 92dB
Frequency characteristicPhono:RIAA standard curve±0.5dB
AUX: 7Hz-75kHz+0 -3dB
Tapes monitors 1 and 2Playback: 150mV / 47kohm
Rec Out:150mV
Tone controlBass: 50Hz±13dB
Treble: 20kHz±13dB
Loudness100Hz+8dB
A high light filter7kHz-6dB / oct
<Synthesis>
The semiconductor usedIC: Two pieces
Transistor: 23 pieces
Diode: Nine pieces
Power sourceAC100V, 50/60Hz
Power consumption100W
DimensionsWidth 410x height 140x depth of 332mm
Weight7.5kg
OptionWood case SH-770 (3,000yen)
Description thanks to Audio-database
The stereo Integrated Amplifier which carries perfect discrete power amplifier.
The power amplifier part serves as a discrete scheme which uses a low noise and a low-noise transistor.
While circuitry serves as a whole page hardwired-connection differential-amplification perfect complimentary OCL circuitry, inserting an emitter-follower in the subsequent stage of a differential amplification and making the matching with a subsequent stage good, the distortion at the time of a small signal is decreased.
IC selected carefully was used especially for the equalizer circuitry, and a low noise and high stability are realized.
Circuitry is made into a three-step direct coupling system.
A tone control scheme has few surges of a frequency, and it has succeeded in enlarging transition width of a tone.
The electric-field capacitor of a power circuit is the high resisting pressure of 40V, and a 10,000-micro F mass type is used for it.
The step type of 41 points which can be tuned finely correctly is used for a master level control.
It had the double protection network with a relay and a fuse, and it has prevented damaging a transistor and a speaker also in an emergency.
Moreover, the time constant was given to the relay circuit and the shocking sound at the time of the power source ON is prevented.
A two-set interconnection is possible for a tape deck, and dubbing of 1->2 is possible at an operation of a thumb.
The speaker can connect two lines.
The effective loudness switchpoint at the time of a small sound volume and the high light filter from which the noise of loud sounds, such as a scratch noise, is removed are also carried.
There was a wood case as an option.
(from a upper left-hand)
- 41-point master control
- Power transistor
(from a upper-right)
- 10,000-micro F mass quantity resisting pressure electrolytic capacitor
- UNSWITCHED power receptacle
- UNSWITCHED power receptacle
- Two speaker terminations
Rating of a mode
FormStereo Integrated Amplifier
<Power amplifier part>
Effective output (both ch(es))1kHz:55W+55W (4ohms)
43W+43W (8 ohms)
20Hz - 20kHz :50W+50W (4 ohms)
41W+41W (8 ohms)
THD0.2%
Output bandwidth (both channel 8ohm)5Hz - 65kHz-3dB
Remains noise0.6mV
Dumping factor40 (8 ohms)
Conformity load intensityMain or Remote: 4ohms - 16ohms
Main+Remote: 8 ohms - 16 ohms
<Preamplifier part>
Input sensitivity/impedancePhono: 2mV / 47kohm
Tuner, AUX:150mV /, 47kohm
The Phono maximum input (1kHz, RMS)120mV
SN ratio (IHF-A)Phono:72dB
Tuner, AUX: 92dB
Frequency characteristicPhono:RIAA standard curve±0.5dB
AUX: 7Hz-75kHz+0 -3dB
Tapes monitors 1 and 2Playback: 150mV / 47kohm
Rec Out:150mV
Tone controlBass: 50Hz±13dB
Treble: 20kHz±13dB
Loudness100Hz+8dB
A high light filter7kHz-6dB / oct
<Synthesis>
The semiconductor usedIC: Two pieces
Transistor: 23 pieces
Diode: Nine pieces
Power sourceAC100V, 50/60Hz
Power consumption100W
DimensionsWidth 410x height 140x depth of 332mm
Weight7.5kg
OptionWood case SH-770 (3,000yen)