Aiwa AX-7800U (c. 1980)
Little is documented about the Aiwa AX-7800U beyond a pair of period receiver tests, but those establish the essentials: it was a 60-watt AM/FM receiver with digital frequency-synthesis tuning, on the U.S. market around 1980.
HI-Fi-Stereo-Buyers (May 1980, p.50) listed it at $590 and described it as FTC-rated at 60 watts RMS per channel into 8 ohms, 20 Hz to 20 kHz, at no more than 0.05% THD. The same review found the synthesized tuning system convenient, effective and notably accurate.
HiFi/Stereo Review's Hirsch-Houck Laboratories test (June 1980) echoed that. The tuner scanned the band pausing five seconds on each received station, reversed direction at the end of the band, and offered a HOLD SCAN control (p.42). The lab also counted nine signal-strength indicator lights coming on between 19 and 57 dBf (4.8 to 400 µV), measured tuner frequency response flat within ±0.5 dB from 30 Hz to beyond 10 kHz (up 1 dB at 15 kHz), and pegged tuner hum at -66 dB (p.46). Their bottom line was that the AX-7800U was an above-average receiver of its kind.
Known specs:
- 60-watt AM/FM receiver with digital frequency-synthesis tuning
- 60W RMS/ch into 8 ohms, 20 Hz–20 kHz, ≤0.05% THD (FTC)
- Auto-scan tuner with 5-second dwell and HOLD SCAN
- List price: $590 (U.S., 1980)
Beyond those reviews, the record here is thin — no further documentation has surfaced in the archive.
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