The VTX B28 Dual 18-Inch Flyable Subwoofer from JBL is ideal for use in rental and touring companies, as well as in high-end fixed installations.
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.
The 2288H-M 18-inch woofers are engineered from the ground up to deliver transparent, linear bass response down to 25 Hz. This driver leverages JBL’s patented, fourth-generation, Differential Drive technology to deliver maximum sensitivity and power handling in a light, compact design. The B28 is intended to provide accurate very low frequency coverage adequate for the most demanding applications.
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.
JBL VTX B28 Features
- 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
- VTX B28 arrayable dual 18" subwoofer1
- Frequency Range (-10dB)25Hz - 80Hz (preset VTX B28 80)
- Coverage Pattern Optionsomnidirectional or cardioid (based on speaker preset selection and cabinet orientation/configuration)
- System Input Power Rating2600W continuous (IEC/100 hour)
- Max. Peak Output141 dB (preset VTX B28 80)
- System Amplification
- Crown I-Tech 12000HD
- Crown I-Tech 4x3500HD
- Required Amplifier Channels(1) channel (SUB)
- Number of Cabinets per Amplifier
- IT-12000HD: (2) VTX B28
- IT-4x3500HD: (2) VTX B28
- System Impedance4Ω
- Low Frequency Transducers(2) JBL 2288H-M, 18" diameter, dual 4" diameter voice coil, Neodymium Differential Drive
- Connectors
- Type: Neutrik® speakON® NL4 (one at the rear and one at the front)
- Pin Assignments: Pins 1 ± active | Pins 2 ± not connected
- Enclosure
- Construction: 18 mm 13-ply and 12 mm 9-ply Finnish birch plywood, Black DuraFlexTM finish, four integral recessed handles
- IP Rating: IP55 (IEC 60529)
- Suspension: high-grade steel with anti-corrosion coating, captive suspension plates, captive pins, spring-loaded mechanism, two-step safety lock
- Grille: powder coated 1.8 mm (14-guage) hex-perforated stainless steel with acoustically transparent black cloth backing
- Dimensions (HxWxD)20" x 52.1" x 29.5"
- Weight191.8 pounds
