SANSUI QS-100
¥ 49,800 (around 1973?)
Commentary
A 4-channel rear amplifier that incorporates a main amplifier for the rear in a Sansui QS synthesizer decoder.
By connecting to an amplifier with a tape monitor switch, you can enjoy 4-channel playback.
The function switch allows you to select the sound field effect according to your preference, as well as the recording method of the source, the number of songs and the composition.
It is equipped with a phase modulation circuit, and from the rear, phase difference signals (indirect sound and reverberation components) that are transmitted in the hall changing from moment to moment are reproduced. By combining it with the sound from the front, a sound field like that of a concert hall can be reproduced.
In order to obtain a natural sound field, an IC-based pure electronic circuit system is adopted.
The rear amplifier uses the quasi complimentary service ITL-OTL system.
It is equipped with a protective circuit using a quick disconnect fuse.
The rear speaker can be arranged in two ways (2-2 system, 2-2 system in front) depending on the number of songs and composition.
Two methods can be compared by switching the switch.
Model Rating
4-channel rear amplifier | |
<Synthesizer / decoder unit> | |
Input Sensitivity / Impedance | Rated input : 200mV/50k Ω (2 ch) Minimum Input : 100 mV (2 ch) 4-channel input : 775mV/50k Ω Tape Monitor Input : 200mV/50k Ω (Pin/Din) |
Output level (front) | Rated output : 775 mV Maximum output : 2.5 V |
Recording Output (2 ch) | Tape Rec(Pin):200mV Tape Recorder(Din):30mV |
Frequency characteristic | Front : 20 Hz to 20 kHz ± 1 dB Rear : 20 Hz to 20 kHz ± 1 dB |
Rear channel phase modulation | Maximum 180 ° (10 kHz) |
Hum and noise (IHF) | 70 dB or more |
Main Amplifier Section | |
Music Power (IHF) | 50W (4 Ω) 44W (8 Ω) |
Effective power | 18W/18W (4 Ω) 15W/15W (8 Ω) |
Total harmonic distortion factor | Not more than 0.8% |
Cross modulation distortion factor | Not more than 1% |
Power Band With (IHF) | 25 Hz to 40 kHz |
Frequency characteristic | 20 Hz to 50 kHz ± 1 dB |
Channel separation | 50 dB or More (1 kHz) |
Hum and noise | 80 dB or more |
Load impedance | 4 Ω ~ 16 Ω |
Damping factor | 70 (8 Ω) |
<General> | |
Semiconductor used | Transistor : 23 FET : 2 IC : 3 Diode : 10 pcs Module : 5 |
Power supply voltage | 100 VAC, 50Hz/60Hz |
Power consumption | 85W (max) |
External dimensions | Width 250x Height 127x Depth 278 mm |
Weight | 5.1kg |