Sansui TU-X1
Little is documented about the Sansui TU-X1. What survives comes mostly from a handful of period reviews. It was a full-function AM/FM tuner, which was unusual at the high end of the era, when many flagship tuners were FM-only. High Fidelity (April 1979, p.57) called the TU-X1 an exception to the FM-only trend in high-end tuners. It singled out the AM section for its unique array of features aimed at optimizing signal quality in the often-ignored band.
HI-Fi-Stereo-Buyers (January 1980, p.35) described the TU-X1 as an impressive-looking machine with separate AM and FM controls and metering. It also mentioned that the FM signal-strength meter could double as a sensitive multipath-distortion indicator. The same publication's September 1979 issue (p.79) pictured the TU-X1 alongside the Kenwood KT-413. Listed features included a switchable multiplex filter, a muting switch, and signal-strength and center-channel tuning meters.
No original price, detailed circuit description, or sales figures have been confirmed.
- Type: AM/FM analog tuner
- Frequency response (FM): 30 Hz–15 kHz, +0.2/–0.5 dB
- THD (FM, 1 kHz): 0.04%
- Stereo separation (1 kHz): 50 dB
- Selectivity: 70 dB
- Features: Separate AM/FM controls & metering, multipath-sensitive signal-strength meter, switchable multiplex filter, muting, center-channel tuning meter
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