Pioneer TX-800
A stereo FM/AM tuner built for the congested city dial, where the signal you want is buried under three you don't.
Overview
The TX-800 arrived in 1972 as Pioneer's answer to a real problem: the cluttered urban FM band, where strong local stations crowd the dial and weak ones disappear beneath them. High Fidelity (February 1972, p.40) described the design as aimed squarely at that signal maze. The circuit choices back it up - an FET front end paired with three integrated circuits and three ceramic filters in the IF stage. That's a serious filter count for a tuner of this class. Image rejection is rated at more than 80 dB, which counts for a lot if you live within a few miles of a blowtorch transmitter.
The published figures, as listed in the 1972 annual equipment directories, put capture ratio at 3.0 dB and nominal total distortion at 0.8%. Hum and noise is rated at -55 dB. On the AM side, sensitivity is listed at 150 µV for 20 dB signal-to-noise. None of these are showroom-floor bragging numbers. They describe how the thing behaves when you're trying to pull a jazz program out of a dial full of country.
Around back — or rather, around the front panel — the TX-800 carries the expected working aids: a stereo indicator light, a signal strength meter, and inter-station muting. That last one is the quality-of-life feature that separates a tuner you leave on from one you stop using.
The chassis measures 3¾ inches high, 12 inches wide, and 9¾ inches deep, with an aluminum panel. It's a compact footprint by the standards of the era, the kind of tuner that sits on a shelf without demanding the whole shelf. The aluminum faceplate is the period-correct Pioneer look.
Price was $109.95 according to the 1972 equipment listings. That's a modest outlay for a tuner with an FET front end and a three-ceramic-filter IF strip.
The period press treated it as a news item rather than a full lab review. High Fidelity (February 1972, p.40) covered the TX-800 in its "Equipment in the News" column, framing it around the urban-signal problem and the front-end and IF design. That's favorable, but it isn't a measured verdict. The magazine described the design intent, not bench results. A full test-bench report on this model doesn't turn up in the 1972 review literature indexed here.
If the FM dial where you live is crowded, the FET front end, the ceramic filters, and the 80-plus dB image rejection are the reasons to look at this one. In the country with three stations and a clear sky, the TX-800 will do the job, but the filtering goes unused.
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