Sansui J-11 (c. 1979–1980)
Little is documented about the Sansui J-11. What survives comes from period equipment directories and a single comparative review. listed it as an air-suspension system priced at $280, rated for 30 watts (14.75 dBW) maximum power into 8 ohms, and weighing 42 lbs - a big box at 25½ × 15 × 10¾ inches.
The J-11's notable feature was a passive radiator. HiFI-Stereo (August 1979, p.67) observed that this allowed the benefits of a vented-enclosure design, extended low bass, in a cabinet where a conventional port would have been impractical. That same test noted the J-11 was one of only two speakers in the group to use this loading method.
Beyond these two sources, almost nothing else is recorded. The High Fidelity entry notes that the J-11 shared its feature set with the Sansui SPA‑3100, but the nature of that relationship is not explained. No service literature, advertising, or design details have surfaced.
- Type: Air suspension with passive radiator
- Impedance: 8 ohms
- Max power: 30 watts (14.75 dBW)
- Dimensions: 25½ × 15 × 10¾ inches (H×W×D)
- Weight: 42 lbs
- Price new: $280
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