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Large Format Optimized Aperture Horns
- 2392, 2393, 2394

The 3 inch series is a unique addition to JBL's family of Bi-Radial® horns. The design goals were to provide very high level sound pressure at low distortion over the bandwidth of 300 Hz to above 3 kHz, with very uniform coverage. Extensive computer modeling including proprietary JBL Horn Design software, finite element analysis and boundary element analysis was used to optimize the coverage pattern, distortion, and size. This application of advanced technology helped create the Optimized Aperture™ family of Bi-Radial® horns.

Coupling of the compression driver phase plug directly to a reduced length horn throat, that terminates into an optimized diffraction aperture, results in unmatched output with a minimum distortion levels. Constant horizontal and vertical coverage patterns over a bandwidth of 300 Hz to 4 kHz allow precise control of critical vocal range energy. Greater intelligibility is more easily achieved while reducing problems of lobing and comb filtering.


2392 90°x50° Horn

2392 Specification Sheet
(Adobe Acrobat, 953kb)

  • 90° x 50° nominal dispersion
  • 76 mm (3 in) throat entry
  • 114 dB sensitivity (1W/1m with 2490H driver)
  • 300 Hz usable low frequency limit
  • Uniform on- and off-axis frequency response
  • 137 dB maximum continuous SPL
  • Precise horizontal and vertical pattern control
  • Net weight: 18 kg (40 lb)


2393 60°x40° Horn

2393 Specification Sheet
(Adobe Acrobat, 953kb)

  • 60° x 40° nominal dispersion
  • 76 mm (3 in) throat entry
  • 115 dB sensitivity (1W/1m with 2490H driver)
  • Uniform on- and off-axis frequency response
  • 300 Hz usable low frequency limit
  • 138 dB maximum continuous SPL
  • Precise horizontal and vertical pattern control
  • Net weight: 32.2 kg (71 lb)


2394 40°x30° Horn

2394 Specification Sheet
(Adobe Acrobat, 953kb)

  • 40° x 30° nominal dispersion
  • 76 mm (3 in) throat entry
  • 116 dB sensitivity (1W/1m with 2490H driver)
  • Uniform on- and off-axis frequency response
  • 300 Hz usable low frequency limit
  • 139 dB maximum continuous SPL
  • Precise horizontal and vertical pattern control
  • Net weight: 36.4 kg (80 lb)


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