SANSUI SAX-250
¥ 39,900 (released in July 1969)
Commentary
FM/AM receiver targeted for personal use.
The front end of the FM tuner section is equipped with an FET and a 3-row varicon.
In addition, a 5-stage IF amplifier achieves low distortion rate and high sensitivity.
The power amplifier section uses a quasi complimentary service circuit using silicon transistors.
It is equipped with FM stereo indicator, MPX noise canceler, automatic FM stereo switching function, tape monitor and loudness control.
Model Rating
Type | FM/AM Receiver |
<Audio section> | |
Music Power (IHF) | 36W (4 Ω) 32W (8 Ω) |
Effective power | 16W/16W (4 Ω) 14W/14W (8 Ω) |
Total harmonic distortion factor | Not more than 1% |
Intermodulation distortion factor (60 hz : 7 khz = 4 : 1) | Not more than 1.5% |
Power Band With (IHF) | 30 Hz ~ 25 kHz (Distortion Factor 1%) |
Frequency characteristic | 25 Hz to 30 kHz ± 2 dB (normal output, aux, over all) |
Channel separation | Phono : 40 dB or more (1 kHz) Aux : 45 dB or more (1 kHz) |
Damping factor | 20 or More (8 Ω) |
Load impedance | 4 Ω ~ 16 Ω |
Hum and noise (IHF) | Phono : 65 dB or more (closed circuit) |
Input Sensitivity / Impedance (at 1 kHz for the rated output voltage) |
Phono : 3.0 mV ± 3dB/50k Ω Aux : 180 mv ± 3dB/100k Ω Tape mon (pin) : 180 mv ± 3dB/100k Ω |
Recorded output (for rated input) | Tape Rec (pin) : 180 mv ± 3 db Tape Recorder (din) : 30 mv ± 3 db |
Tone control | Bass : ± 10 dB (50 Hz) Treble : ± 10 dB (10 kHz) |
Loudness (Volume-30dB) | 50Hz:+11dB 10kHz:+3dB |
FM Tuner Section | |
Receiving frequency | 76 MHz to 90 MHz |
Sensitivity | 2.5 μ V (S/N20dB, MOD30%) |
Practical sensitivity (IHF) | 3 μ V |
Total harmonic distortion factor | Not more than 1% 1.5% or less (at MPX) |
Signal-to-noise ratio | 50 dB or more |
Selectivity | 35dB |
Capture Ratio (IHF) | 3dB |
Image ratio | 45dB |
Separation | 30 dB (input 60 dB, 1 kHz) |
Unwanted radiation | 34 dB or less |
Antenna input impedance | 300 Ω equilibrium 75 Ω unbalance |
<AM Tuner Section> | |
Receiving frequency | 535 kHz to 1,605 kHz |
Practical sensitivity (IHF) | 51dB/m (ferrite bar antenna) |
Selectivity | 20dB(1,000kHz) |
Image ratio | 35dB |
IF Rejection | 45 dB or More (1,000 kHz) |
<Others> | |
Semiconductor used | Transistor : 26 Diode : 18 pcs |
Pwer | 100 VAC, 50Hz/60Hz |
Power consumption | 15 VA (No Signal) 100 VA (Maximum Output) |
External dimensions | Width 402x Height 116x Depth 282 mm |
Weight | 9.5kg |