CORAL BX-multi1000
¥ 21,400 (1 unit, sold in May 1970)
Commentary
Multi-High Power Series 3-way speaker system, an improved version of High Power Series.
A 25 cm cone type woofer is installed in the low range.
It employs a powerful magnetic circuit using a large magnet equivalent to the 30 cm class of conventional Coral products and a large diameter voice coil. Combined with the use of Coral's unique long travel voice coil and skybar edge, it achieves a large input, high efficiency, low distortion and low fo.
A 16 cm cone type squaker is mounted in the middle area.
This unit uses a dome radiator made by Super Duralumin to improve the connection from the mid-range to the high-range, and a newly developed damper provides appropriate braking to achieve a flatter frequency response.
The frame has a completely sealed structure to eliminate the adverse effect of the back pressure of the woofer.
Two horn type tweeters are installed in the high range.
A film diaphragm is used for the diaphragm and the weight reduction of the vibration system enables high-frequency reproduction at 25 kHz.
Equipped with level control, you can adjust the middle and high ranges independently.
The enclosure uses a bass reflex system.
The exterior has a walnut polyurethane finish, and the front grill uses a grating grill.
In addition to the normal input terminal, an independent input terminal is mounted for each band of low band, middle band and high band. Multi-amplifier driving is possible by preparing channel dividers and amplifiers.
The all-band input is also equipped with a jack that can be easily connected with a plug.
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Model Rating
| Method | 3-Way, 4-Speaker, Bass Reflex System, Bookshelf Type | ||
| Units Used | For low band : 25 cm cone type For Medium Range : 16 cm cone type For High Frequency : Horn Type x2 |
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| Impedance | 8 Ω | ||
| Playback frequency band | 35 Hz to 25 kHz | ||
| Max Input | 50W | ||
| Crossover frequency | 1.5 kHz, 7 kHz | ||
| Output sound pressure level | 100dB/W | ||
| External dimensions | Width 329x Height 539x Depth 290 mm | ||
| Weight | 14kg | ||
| Each band when multi-amplifier is driven | |||
| Low pass | Mid-range | High range | |
| Frequency characteristic | 35 Hz to 4 kHz | 700 Hz to 9 kHz | 5 kHz to 25 kHz |
| Used frequency band | 35 Hz to 2.5 kHz | 800 Hz to 9 kHz | 7 kHz to 25 kHz |
| Impedance | 8 Ω | ||
| Cutoff attenuation | 12dB/oct. or more | ||
| Crossover frequency | Low to mid range : 800 Hz to 1 kHz Mid to High : 7 kHz to 9 kHz |
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| Amplifier output | 50W | 30W | 20W |
| Combined amplifier output | 5W ~ 50W | 5W ~ 30W | 5W ~ 20W |
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