16650 Midway Ranch Road, Fountain, CO 80817 (720) 727-7617

JBL VTX B28 - Rocky Mountain Sound Light & Video

Project Information

  • Frequency Range (-10dB): 25 Hz - 80 Hz (Preset: VTX B28 80)
  • Coverage Pattern: Omnidirectional or Cardioid
  • Maximum Peak Output: 141dB (Preset: VTX B28 80)
  • System Amplification: Crown Audio I-Tech HD
  • System Impedance: 4 ohms
  • Dimensions (H x W x D): 508 mm x 1324 mm x 750 mm 20 in x 52.1 in x 29.5 in


The VTX B28 is JBL Professional’s next-generation dual 18-inch subwoofer, designed to complement the company’s flagship VTX full-range sound reinforcement systems, and capable of delivering uncompromised low-frequency performance, even for the most demanding shows on the planet. The B28 boasts JBL Differential Drive transducers, an exclusive port design, and the same industrial design found in JBL’s VTX A-Series products. It is equally ideal flown or ground stacked, in omnidirectional or cardioid configurations. Simple and fast rigging, a selection of accessories, and software support make the B28 an exceptional choice for rental, AV, and touring companies, as well as in high-end fixed installations.

A simple, integral, two-point rigging system allows flown arrays of up to 16 B28 enclosures. Three M20 pole mount attachments on the enclosure’s top can interface with standard Base Plate accessories for the A12, A8, and V20 systems to create ground stacked systems. B28 systems are powered exclusively by Crown I-Tech HD amplifiers and are fully integrated into JBL’s software ecosystem.


  • Delivers transparent, linear bass response down to 25 Hz
  • JBL Differential Drive woofers
  • Large double-flared port for greater extension and reduced turbulence
  • Simple 2-point spring-loaded rigging system
  • FEA-optimized enclosure
  • Front and rear NL4 connectors
  • Support for omnidirectional or cardioid modes
  • Acoustically compatible with all VTX full-range products
  • Flexible accessory options


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16650 Midway Ranch Road, Fountain, CO info@rmslv.com (720) 727-7617