World's First "Mini" Speaker with Passive Radiator for Double-Rich Bass
Sansui has solved a big problem in little speakers. We custom-designed a passive radiator unit for the miniature 2-way, 2-speaker J11 system. It effectively restores the realistic rich bass sound which most other "minis" forfeit for their small size.
Double-rich bass isn't the only advantage in the J11. nor is its small size - no taller than a wine bottle or much wider than a paperback book - the feature you'll appreciate most. Where Sansui audio technology really shows up best is in the distinct sound image reproduction from this unique system - strictly hi-fi in every respect.
The surprising depth of the bass is complemented by natural sounding midrange and crisp highs for tonal balance. Bearing in the high frequencies is no problem since the newly-designed dome tweeter disperses its sound waves uniformly over a wide arc. The special design of the solid aluminum enclosure also adds to the big-hearted authority of this modestly sized "mini" from Sansui where it's all hi-fi.
Light and Firm Diaphragm for Tight Bass from 10 cm Woofer
It follows that if the passive radiator is to deliver authentic sound reinforcement from the woofer, the woofer itself must be of the highest performance standards. Here we've developed very special cone paper by mixing two different types of acerose pulps to achieve lightness, firmness and strength. The woofer cone, 10 cm in diameter, weighs only 0,6 grams, yet can respond faithfully to amp inputs over a wide frequency range.
Linearity in the woofer is further improved with the use of a separate, resin-formed surround. Distortion particularly in the second harmonics, is never noticeable, even during high-level reproduction, since the large magnet offers a huge 9,000 gauss field, uniformly distributed by the precision machined pole piece. The voice coil bobbin is highly heat resistant for constant performance, another assurance of excellent performance in all practical audio situations.
Soft-dome tweeter has Polyester-Based Cloth Diaphragm Large magnet
What are the three major benefits of the soft-dome design in tweeters. One, wide dispersion without "beaming". Two, low resonance to avoid distortion. Three, crispness and musically in the high frequencies. These, crispness and musically in the high frequencies. These add up to explain the popularity of soft domes, especially in "mini" systems. But we've added a fourth important benefit in outs, a better Signal-to-Noise Ratio by forming the one-piece diaphragm/rolled surround of responsive but firm polyester based cloth, damped by an acrylic-based agent, this construction avoids the use of chemical agents in binding the core to the surround, and thus prevents tonal degradation. To achieve transparent highs extending well into the supersonics, we've given this remarkable tweeter a powerful 9,000 gauss magnetic, flux, combulling phase irregularities by mounting an acoustic equalizer behind the diaphragm.
Specifications
Speakers
Woofer: 100 mm (4") cone type
Tweeter: 25,4 mm (1") dome type
Passive Radiator: 100 mm (4") concave type
Max. Input Power: 60 watts ( 80 to 20,000 Hz)
Impedance: 5 Ω
Sensitivity: 85 dB/W (JIS at 1 m)
Frequency Range: 45 to 20,000 Hz
Crossover Network: 2-way, 12 dB/oct. L-C parallel type
Crossover Frequency: 2,500 Hz
Dimensions (W x H x D): 122 x 300 x 131,5 mm (4-13/18" x 11-13/16" x 5-3/16")
Weight: 2,9 kg (6,4 lbs)