JBL 4756A
¥ 580,000 (1 unit, around 1992)
Commentary
Sound Power Series 2-way speaker system.
It is suitable for sound reinforcement and full-scale music playback in medium-sized and larger halls.
The 4756A is based on the 4755A and consists of two additional biradial ring radiators 2404H as a high-frequency unit.
Two 30-cm cone type woofer 2206H are installed in the low range.
The mid-range is equipped with a horn type unit that combines a compression driver 2445J with a 10 cm diameter titanium diaphragm and a flat front biradial horn 2380A with a 5 cm throat.
The enclosure uses a bass reflex system.
Tri-amp drive system is adopted.
In addition, by inserting a crossover network N4751AP between the middle and high regions, it is possible to switch to a bi-amplifier drive system divided into low and middle regions.
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Model Rating
| Method | 3-way, 5-speaker, bass reflex system | ||
| Unit | For low band : 30 cm cone type (2206H) x2 For Middle Range : Horn Type (2445J + 2380A) For High Range : Horn Type (2404H) x2 |
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| Playback frequency band | 32 Hz to 20 kHz -10dB | ||
| Output sound pressure level |
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| Allowable input | L : 1,200W (AES Standard 50 Hz to 500 Hz) M : 150W (continuous program) H : 40W (continuous program) |
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| Crossover frequency | 1.2 kHz, 7 kHz (recommended value) |
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| Directional characteristic (-6dB) | H90 ° xV40 ° | ||
| Impedance | L : 4 Ω M : 16 Ω H : 16 Ω |
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| Input / output connector | Neutrik NL8MPRx2 | ||
| External dimensions | Width 850x Height 680x Depth 480 mm | ||
| Weight | 65kg |
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