| Title | Value |
|---|---|
| AUDIO section | AUDIO section |
| Power output : | 22W total (IHFM) |
| 2x 10W (RMS power) | |
| 2x 8W (RMS, both channels driven) | |
| THD : | 1,5% |
| Power bandwidth : | 35Hz...15Khz (IHFM) |
| Frequency response : | 30Hz...20Khz (± 2dB) |
| Channel separation : | 40dB @ 1Khz (phono) |
| 50dB @ 1Khz (aux) | |
| Hum & noise : | 65dB under rated output (IHFM, phono) |
| 70dB under rated output (IHFM, aux) | |
| Output impedance : | 8 and 16 Ohm |
| Input sensitivity : | 3mV for rated outut (phono) |
| 150mV for rated output (aux) | |
| 660mV (tape monitor) | |
| EQ characteristic : | RIAA |
| Bass control : | ± 10dB at 50Hz |
| Treble control : | ± 10dB at 10Khz |
| Loudness control : | +8dB @ 50Hz (vol. at -30dB) |
| +8dB @ 10Khz (vol. at -30dB) | |
| Noise filter : | -10dB @ 10Khz |
| FM section | FM section |
| Sensitivity : | 4,0µV (IHFM) |
| 2,5µV (IHFM, for 20dB quieting) | |
| FM frequency response : | 40Hz...20Khz (± 2dB) |
| FM stereo frequency response : | 35Hz...15Khz (± 2,5dB) |
| IF selectivity : | 200MHz (-3dB) |
| THD : | < 1,5% |
| FM channel separation : | 35dB at 1Khz |
| AM section | AM section |
| Sensitivity : | 30µV (IHFM) |
| IF selectivity : | 8Khz |
| IF frequency : | 455Khz |
| General | General |
| Tubes : | 4x 6BM8 |
| 3x 6AQ8 | |
| 1x 6BE6 | |
| 3x 6BA6 | |
| 1x 6BL8 | |
| 2x 6BN8 | |
| 1x 12AX7 | |
| 1x 6GE-12A | |
| Transistors : | 2x 2SC402 (2SC650) |
| Diodes : | 2x SE-05.a |
| 1x SE-05-03 | |
| 2xIS-180 | |
| Germanium diodes : | 5x 0A91 |
| PC : | 115VA |
| Weight : | 29,1lbs |
| Cubic measure : | 1,9cft |
Sansui Model 250
c.1965
Cute little stereo receiver with more tubes than your fingers (all of them) and 2x 8W power output, along somewhat modest specifications.
But : silicon diodes in the rectifying circuit, "new type" silicon transistor phono head amp, center channel output jack, loudness switch, super wide-band output transformers, MPX circuit and a tape monitoring circuit.
Also Peter, Paul and Mary singing in concert - providing one has the optional reel-to-reel tape player.
Can't have everything : fifteen tubes, twelve transistors, Peter, Paul and Mary in concert for so little money.
Given its vintage, the Model 250 was probably named SAX-xxx in Japan, as per Sansui 1950s and 1960s names. I haven't found an equivalent japanese model so far.
page online since : november 2008
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