SANSUI AU-22
¥ 45,000 (released in 1974)
Commentary
Pre-main amplifier with all-IC design.
Hybrid IC with high reliability and excellent S/N ratio is adopted in the power stage.
The circuit configuration is an orthodox quasi complimentary service system.
A high-gain IC is used in the equalizer to increase the NFB, flatten the frequency response and improve the distortion factor and S/N ratio.
Monolithic IC is used for the tone control part.
The adjustment is Klix/Klukš top type, and it can be corrected in 10 stages.
Equipped with a high filter and loudness switch.
A push-type input selector is used for quick and one touch operation.
Two types of speakers can be connected.
There is a microphone jack on the front panel and it can be used in various ways.
The AU-22 uses a method in which the front panel control switches are connected directly to the printed circuit board instead of using cables.
This eliminates problems caused by wiring and improves reliability and durability.
Model Rating
Type | Pre-main amplifier |
Effective output (1 kHz) | 13W + 13W (8 Ω, both channel operation) 15W/15W (8 Ω, single-channel operation) |
Music power (IHF, 1 kHz) | 50W (4 Ω) |
Total harmonic distortion factor | Not more than 0.8% |
Cross modulation distortion factor | 1.0% or Less (Rated Output, 70 Hz : 7 kHz = 4 : 1, SMPTE) |
Power Band With (IHF) | 30 Hz to 22 kHz |
Frequency characteristic | 30 Hz ~ 40 kHz + 1.0 -2.0 dB (Main Amplifier at 1W Output) |
RIAA deviation | 30 Hz to 15 kHz ± 1.0 dB |
Damping factor | 30 (8 Ω) |
Input Sensitivity / Impedance | Phono : 2.5mV/50k Ω Tuner, Aux : 150mV/50k Ω Tape monitor (PIN/DIN) : 150mV/50k Ω Mic : 2.5mV/10k Ω |
Phono maximum allowable input | 100 mV (THD 0.5% or less) |
Output Voltage (1 kHz) | Tape rec(PIN):150mV |
Channel Separation (1 kHz) | Phono : 45 dB or more Aux, Tuner : 45 dB or more |
Hum and noise (IHF) | Phono, Mic : 65 dB or more Tuner, Aux, Tape monitor : 75 dB or higher |
Tone control | Bass : ± 12 dB (50 Hz) Treble : ± 12 dB (20 kHz) |
Loudness (Vol-30dB) | + 10 dB at 50 Hz, + 8 dB at 10 kHz |
High filter | 7 kHz, -3dB (6dB/oct.) |
Rated power consumption | 45W |
External dimensions | Width 400x Height 120x Depth 240 mm |
Weight | 5.5kg |