Quartz Locked Stereo FM/AM Tuner (1979-80)
When you build a tuner as fine as the top-of-the-line Sansui TU-919, the last thing you can afford is to let tuning drift endanger performance.
This is why every single precaution necessary to improve this tuner's accuracy is built in, and why we've eliminated drift entirely with a Digitally Quartz-Locked system that was perfected - and then some in Sansui laboratories.
Quartz, as you know, is nothing new. What is new is the way Sansui continues to use it for dependability.
Since a sliver of quartz crystal (similar to that used in fine timepieces and turntables, etc) can be energized to emit a reference frequency of extremely high regularity, there's nothing quite like it for tuning accuracy.
In the TU-919, the Sansui engineers have combined it with digital control for more than tuning convenience and cosmetics. Once you quartz-tune your station, the backup circuitry we've employed for the digital frequency control keeps it locked.
This unique and highly effective Sansui system is just one of the reasons why the TU-919 is a desirable and dependable precision instrument.
Included is a Darlington-connected differential IC in the IF, selectable bandwidth circuitry, and other key developments which ensure both better tuning accuracy and faithful audio reproduction than any comparably-priced tuner.
At Sansui, where its all hi-fi, the TU-919 continues the superlative tradition of high performance.
Type: Mono/Stereo Tuner
Tuning Bands: FM, MW
Tuning Scale: Analogue
FM Tuning Range: 88 to 108 MHz
MW Tuning Range: 530 to 1600 kHz
Sensitivity: 0.95uV (FM), 220uV (MW)
Signal to Noise Ratio: 76dB (FM), 50dB (MW)
Distortion: 0.15% (FM), 0.35% (MW)
Selectivity: 80dB (FM), 35dB (MW)
Frequency response: 30Hz to 15kHz (FM)
Semiconductors: 73 x transistors, 57 x diodes, 6 x FET, 16 x IC
Dimensions: 430 x 168 x 402mm
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