Flat-Front Bi-Radial® Horn for 1" (25 mm) throat Bi-Radial® Horns


The JBL Model 2370A is a compact Bi-Radial® horn with a nominal coverage pattern of 90° horizontal x 40° vertical. The horn provides uniform on and off axis frequency response in the horizontal plane from 630 Hz to beyond 16 kHz. The horn's small vertical mouth dimension was chosen to allow a gradual narrowing of the vertical coverage pattern with increasing frequency. This provides acoustic equalization of the frequency response of the horn in the horizontal plane and compensates for the falling power response of all compression drivers. Should constant vertical pattern control be required, two or more 2370As may be stacked to restore full Bi-Radial® performance.

The horn's exceptionally consistent horizontal dispersion eliminates the midrange narrowing and high frequency beaming problems typically associated with conventional horn designs. Additionally, the 2370A's highly predictable performance greatly simplifies cluster design. The need for horn overlapping is minimized and lobing and comb filter effects are virtually eliminated.


  • 90° x 40 ° nominal dispersion
  • Uniform horizontal on and off axis frequency response
  • Precise horizontal pattern control
  • Full horn loading to 630 Hz
  • Flat front, compact size, and lightweight construction
  • 25 mm (1 in) throat entry


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Parts & Service


水平覆盖角度 (-6dB) 90° ( + 10°,15°) 630 Hz 16 kHz Average Range
垂直覆盖角度 (-6dB)

112° 1kHz Average Range

69° 2 kHz Average Range

42° 4 kHz Average Range

28° 8 kHz Average Range

21° 16 kHz Average Range

Directivity Index (DI) 10.9 dB ( + 2.6 -2.4)
Average Range 1 kHz-16 kHz
Directivity Factor (Q) 12.2 ( + 10.1,-5.2)
Usable Low Frequency Limit 500 Hz
Minimum Recommended Crossover Frequency 630 Hz
Axial Sensitivity 110 dB SPL, 1 W @ 1 m
Construction Injection molded reinforced high-density solid polyurethane
Mouth Height 173 mm (6.81 in)
Mouth Width 445 mm (17.5 in)
长度 174 mm (6.84 in)
Rear Height 135 mm (5.31 in)
Rear Width 400 mm (15.75 in)
BAFFLE CUTOUT REQUIRED Height 138 mm (5.44 in)
BAFFLE CUTOUT REQUIRED Width 403 mm (15.88 in)
净重量 1.4 kg (3 lb)


2.3 kg (5 lb)


HARMAN Professional Solutions:


Flat-Front Bi-Radial® Horn for 1" (25 mm) throat Bi-Radial® Horns