Panasonic SB-MX30
¥ 24,000 (1 unit, around 1991)
Commentary
A bookshelf type speaker system that uses a mica diaphragm and separate baffle.
A 18 cm cone type woofer is installed in the low range.
The diaphragm is made of a natural material, mica, which is lightweight and has bending rigidity about three times that of aluminum. Because of its high internal loss, mica provides sound quality that reduces the inherent squeal characteristic of high-rigidity materials.
A 2.5 cm dome type tweeter using a mica diaphragm is mounted in the high frequency range.
The enclosure uses a separate baffle, separating the baffle plates for the woofer and for the tweeter to separate unwanted vibrations that pollute the playback sound. In addition, the baffle plate is rounded to suppress diffraction phenomenon, and the circumference of the tweeter is covered with anti-vibration material to suppress radiation of unwanted vibrations.
Uses an anti-magnetic design.
Model Rating
| Method | 2-way, 2-speaker, bass reflex system, bookshelf type, magnetic protection design |
| Units Used | For low band : 18 cm cone type For high-pass : 2.5 cm dome type |
| Playback frequency band | 40 Hz to 45 kHz -16dB |
| Crossover frequency | 2kHz |
| Impedance | 6 Ω |
| Output sound pressure level | 88dB/W/m |
| Allowable input | 160W(MUSIC) 80W(DIN) |
| External dimensions | Width 220x Height 400x Depth 270 mm (w / Net) |
| Weight | 7.0kg |