Denon SC-C7 (1982)
The Denon SC-C7 is a two-way bookshelf speaker released in 1982 at ¥27,500 per unit. Denon positioned it as a refinement of the earlier SuperBoy101 (SC-101), with wider-range playback as the stated goal.
The SC-C7 paired a 20 cm cone woofer with a 2.5 cm hard dome tweeter in a bass reflex enclosure. The woofer cone was made from North European pulp. The voice coil sat on an aluminum bobbin with a high heat-resistance treatment. The tweeter diaphragm was alpha-boron, which Denon claimed was roughly three times as rigid as titanium and had about ten times the internal loss of conventional metal diaphragms. A level control handled the high-frequency band. Eight screws bolted the woofer to an 18 mm baffle, and the cabinet was hard particle board.
Rated frequency response was 42 Hz to 40 kHz. Maximum input was 100W (program source), average output sound pressure level was 91dB/W/m, and impedance was 6Ω. The crossover sat at 3.8 kHz. Dimensions were 256 × 420 × 242 mm (W×H×D), and each speaker weighed 7.5 kg.
Past the specification sheet, the record is thin. No period reviews, owner impressions or production end date have surfaced in the research. Some sources list variants labeled "SC-C7L" and "SC-C7L2" with notably different dimensions, but nothing confirms they are the same product, so they are left out here.
- Type: 2-way, 2-speaker, bass reflex, bookshelf
- Woofer: 20 cm cone; Tweeter: 2.5 cm dome
- Frequency response: 42 Hz – 40 kHz
- Max input: 100W (program source)
- Sensitivity: 91 dB/W/m
- Impedance: 6 Ω
- Crossover: 3.8 kHz
- Dimensions: 256 × 420 × 242 mm; 7.5 kg
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