ลำโพง JBL รุ่น 4301B ลำโพงมอนิเตอร์รหัส 4 collection หน้าสีฟ้า ตัวหายาก Made in USA.
ลำโพง JBL รุ่น 4301B ลำโพงมอนิเตอร์รหัส 4 collection หน้าสีฟ้า ตัวหายาก Made in USA.
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JBL 4301BWX Released in 1980
¥ 93,000 (1 unit, around 1983)
Commentary
A compact monitor speaker developed for editing in broadcast stations and studios.
The 116H which is a cone type Woofer of 20cm is adopted as a low-pass.
It has been developed in pursuit of input resistance characteristics suitable for monitors,
and has been developed to reduce distortion.
Moreover, the hard cone paper with corrugation which improved the high region characteristic,
the precision-designed 5cm diameter voice coil, the pole piece, the gap, the aluminum die-cast
frame, etc. are adopted, and the smoother frequency characteristic is acquired.
The LE26 of the 3.6cm direct radiator is adopted as a high region.
By adopting hard cone paper and center dome, the directivity of horizontal and vertical
90 ° (10kHz) is realized.
Moreover, the circumference of a unit is wrapped with a resin material with a taper to improve
the consistency with a baffle plate, and also to improve the directivity and energy characteristics.
The network part has adopted the thing which considered the phase characteristic and the impedance correction.
The 19mm thickness high density compressed material is used for the enclosure.
4301BWX components Detailed dimensional drawing Frequency characteristic diagram
Model rating
method 2-way, 2-speaker, bass reflex system, bookshelf type
unit For low frequencies: 20 cm cone type (116H) For
high frequencies: 3.6 cm cone type (LE26)
Playback frequency band 45Hz ~ 15kHz ± 3dB
Directivity 90 ° (horizontal / vertical)
Crossover frequency 2.5kHz
Impedance 8Ω
Output sound pressure level 88dB / W / m
Allowable input 15W (RMS)
Enclosure volume 28L
External dimensions Width 291 x Height 483 x Depth 306 mm
weight 12.7 kg.
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