JBL 4380A(4380)
¥ 312,100 (1 unit, around 1973)
¥ 250,000 (1 unit, around 1978)
Commentary
A collinear array type speaker system developed for PA and foldback for speech and music playback in relatively large halls, lecture halls and public halls.
Four 20 cm cone type full-range units 2110 are installed for the low band, two 13 cm cone type full-range units 2105 are installed for the high band, and an acoustic lens 2325 is installed in front of the 2105 for effective diffusion.
The unit layout of the enclosure uses a collinear array design, with two 2110 s at the top and bottom and two 2105 s at the center, designed to effectively overlap the low and middle regions.
The exterior is finished in gray with a black grill attached.
* In the catalog around 1975, it is described as 4380, and 4380 and 4380A seem to be the same model.
Model Rating
Method | 2-Way, 4-Speaker, Sealed Type, Floor Type |
Units Used | For low band : 20 cm cone type (2110) x4 For High Pass : 13 cm Cone Type (2105) x2 Other : Horn lens (2325) |
Playback frequency band | 55 Hz to 15 kHz |
Crossover frequency | 1.5kHz |
Directional | 90 ° (horizontal) x20 ° (vertical) |
Impedance | 8 Ω |
Output sound pressure level | 99 db (New JIS) |
Allowable input | 100W |
Enclosure volume | 93.5L |
External dimensions | Width 362x Height 1,213x Depth 289 mm |
Weight | 37 kg (listed in the catalog after 1975) 35 kg (according to 1973 catalog) |