Alpine 7347-FM
Little is documented about the Alpine 7347-FM. What the record shows: it was a top-of-the-line automotive AM/FM cassette tuner/preamp, described in period press as the company's flagship head-end of its era. HiFI-Stereo (February 1983, p.12) gave it a brief feature listing. It notes a frequency response of 40-17,000 Hz ±3 dB, wow-and-flutter rated at 0.08% (wrms), and a signal-to-noise ratio of 65 dB. The same source mentions microphone mixing, a tape counter, and full controls. That is likely a feature set aimed at serious car audio installations, where the 7347-FM would be paired with outboard amplifiers.
Beyond that listing, surviving information is thin. No original price, production run, or detailed circuit design has turned up in the usual archives. Given the 1983 magazine sighting, it was probably on the market for the 1982-1983 model years, but that is an inference.
Known specifications (from HiFI-Stereo, Feb 1983):
- Type: AM/FM cassette tuner/preamp (automotive)
- Frequency response: 40–17,000 Hz ±3 dB
- Wow-and-flutter: 0.08% (wrms)
- Signal-to-noise ratio: 65 dB
- Notable features: microphone mixing, tape counter
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