Technics SB-1730 (c. 1978)
The Technics SB-1730 is a 2-way, 2-speaker bookshelf-type system, listed at ¥21,800 per unit around 1978. Documentation on this model is thin. No production years, frequency response figures, crossover details or period reviews have surfaced in the sources examined. What the record does show is a straightforward late-1970s Technics design. A 25 cm cone woofer handles the low band and a 6 cm cone tweeter handles the highs. Impedance is 8 Ω, rated output sound pressure level is 92 dB/W/m, and maximum input is 45W. The cabinet measures 335 × 725 × 311 mm and weighs 14.0 kg.
Past the basic specifications, the record goes quiet. No driver model numbers, cabinet construction details or lineup positioning are documented.
- Type: 2-way / 2-speaker / bookshelf
- Low band: 25 cm cone type
- High band: 6 cm cone type
- Impedance: 8 Ω
- Output sound pressure level: 92 dB/W/m
- Max input: 45W
- Dimensions: 335 × 725 × 311 mm
- Weight: 14.0 kg
- Original price: ¥21,800 (1 unit, c. 1978)
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