Luxman 5710-FM
Not much is documented about the Luxman 5710-FM. What survives comes mainly from period tuner roundups. HI-Fi-Stereo-Buyers (1979, p.69) listed it as an FM stereo tuner, and a similar spec block appears in the magazine's 1980 tuner survey (p.89). That suggests it was in the line around that time. The surviving print columns are jumbled OCR, but the spec block that seems to belong to the 5710 reads:
- Usable sensitivity: 4.5 µV (IHF)
- S/N: 70 dB
- Capture ratio: 1.1 dB
- i-f response: −100 dB; image response: −100 dB
- AM suppression: 55 dB
- Stereo separation: 40 dB (1 kHz)
- Output: 1 V fixed / 0–1 V variable
- Dimensions: 4″ H × 17.7″ W × 16″ D
Beyond that listing, the record is thin. No production years, original price or circuit details have surfaced in the available sources.
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