Vt4889 line array

Types of VT4889 line array speakers

JBL Professional's famous and renowned VT4889 line array belongs to the self-powered speaker family. These line array loudspeakers are of two types, namely, a single 18-inch and a dual-driver subwoofer.

VT4889/16

This model has a 16-ohm impedance and contains a single 18-inch Neodymium loudspeaker for the low frequencies. It is a high-power, compact wooden line array loudspeaker with the following features:

• Driver configuration: This model contains a single 18-inch Neodymium low-frequency driver and dual 4-inch mids for the highs.
• Frequency range: 28Hz to 20KHz, with a solid and powerful bass extension.
• Sensitivity: The sensitivity for this model is rated at 96dB.
• Power handling: 800 Watts for the low frequencies and 125 Watts for the highs.
• Dimensions: 71 x 22 x 15 cm (H x W x D), offering a compact and portable design.
• Weight: 34 kg, which is relatively lightweight for a professional loudspeaker.

VT4889/8

The High-power and compact VT4889/8 model are wooden, impeding 18ohm impedance. The specifics include:

• Driver configuration: 1x 18-inch Neodymium LF, dual 4-inch midrange drivers.
• Frequency range: 32Hz to 20KHz, enabling reproduction of deep bass and high frequencies.
• Sensitivity: This model also boasts a sensitivity of 96dB.
• Power handling: 800 Watts for the lows and 125 Watts for the mids/highs.
• Dimensions: 71 x 22 x 15 cm (H x W x D), offering a compact and portable design.
• Weight: 34 kg, which is relatively lightweight for a professional loudspeaker.

Industrial applications of VT4889 line array speakers

The VT4889 JBL line array loudspeakers are intended for different applications; hence they are the choice in many industrial arenas. The key industrial applications of these speakers include:

Concerts and touring

The speakers are important for live music events since they provide high sound pressure levels and even coverage. The intelligibility of the sound assures musicians that the audience will hear the music as it is meant to be played.

Theater and opera

Due to their clarity and dynamic range, the speakers are suitable for use in theatrical productions, including drama series and operas. The speech and music are reproduced clearly even in large venues.

Corporate events

JBL professional line arrays ,like the VT4889, are used in corporate events, including business conferences and product launches. They ensure that presentations are heard clearly, making them important for effective communication during such events.

Houses of worship

The speaker arrays are commonly used in churches and other places of worship. The loudspeaker arrays can handle the musical and vocal demands of religious service with clarity, making them ideal for these large spaces.

Outdoor events

The durable and weather-resistant design of these speakers makes them ideal for outdoor concerts and festivals. They offer premium sound reinforcement in open-air environments.

Installation in venues

All the features of JBL speakers array make them ideal speakers in arenas, auditoriums, and stadiums. They provide consistent sound quality throughout large spaces, enhancing the listening experience in various venues.

Product specifications and key features of VT4889 line array speakers

Key features

• Driver technology: The VT4889 features a patented driver configuration with an 18-inch Neodymium LF and two 4-inch midrange drivers for powerful bass and clear mids.
• Low-frequency performance: The unique JBL Dual-Driver System for the low frequencies ensures tight and accurate bass reproduction down to 32Hz.
• High-frequency clarity: Precision-engineered waveguides ensure even coverage and clear sound for the 3-inch titanium diaphragm compression drivers.
• Power and sensitivity: With a powerful handling of 800 Watts and a sensitivity of 96dB, the VT4889 delivers high sound output with minimal distortion.
• Heavy-duty construction: Rugged, weather-resistant cabinets ensure durability and longevity for outdoor and touring applications.
• Versatile rigging options: A flexible rigging system allows for various array configurations, optimizing performance for different venues and events.

How to install

Correctly and professionally installing the VT4889 requires experience and knowledge of installing various types of loudspeakers in complex situations, including rigging and securing in practice.

• Array configuration: The array configuration is determined depending on the audience area that needs coverage; factors affecting this include the size, shape, and usage of the venue.
• Rigging hardware: The rigging hardware must be attached to the array speakers using the integral flying points and designed strong termination points for the loads to be borne.
• Sjg>Safety considerations: Use backup safety cables, and primary flying hardware correctly, and follow safe operating loads to ensure array failure precautions are met.
• Angling Array boxes: The array boxes should be vertically splayed and should contain known overlaps to ensure smooth coverage of the audience area by all array elements.
• Suspension: The lined arrays must be hoisted and suspended from the calculated strong points in the overhead rigging structure in the venues considered secure for this purpose.
• Focusing: The loudspeakers should be flown at the right height and angle to focus on the audience area and optimize sound coverage with minimum interference.
• Equipment check: Ensure all connections are secure, all rigging hardware is properly installed, and there are no signs of wear or damage before powering up the array.

Maintenance and repair

Frequent maintenance and repair on the loudspeakers increase their lifespan and ensure they operate efficiently throughout. Repairs should, however, not be attempted over and professionals over these.

• Regular inspection: They should be checked for physical wear, tear, dent, or crack as they are exposed to elements and environmental conditions.
• Cleaning: Electrical components shouldn't be cleaned using water; clean and remove debris, dust, mud, and moisture from them.
• Moisture protection: Steps should be taken during array usage in wet and humid conditions, such as using weatherproof covers and checking seals on moisture penetration.
• Driver checks: The drivers should be checked for visual signs of damage, such as punctures or tears, for efficient sound reproduction.
• Component testing: A technician's help should be sought if there is any problem with sounds such as distortion or imbalance; they will carry out the necessary repairs or replace faulty components.
• Electrical connections: Ensure all connections are clean and secure and re-solder all corroded or loose connections to prevent short circuits or performance degradation.
• Firmware updates: Any system running internal electronics arrays may require firmware updates posted online by the manufacturer for array optimizations and bug fixes.

Quality and safety consideration of VT4889 line array speakers

Quality considerations

• Transducer quality: Premium JBL drivers give tight bass, smooth mids, and clear highs for stellar sound performance.
• Crossover design: Sophisticated active crossovers ensure optimal frequency distribution, preventing distortion and maximizing output across all ranges.
• Enclosure materials: Durable but lightweight premium plywood of the high-grade enclosure allows for easy transport while ensuring low resonance for clear sound.
• Power amplification: Integrated high-efficiency amps provide the required power with minimal energy for outstanding bass without speaker damage or distortion.
• Array performance: Advanced line array configuration promotes even sound coverage and greater SPLs for professional sounds in any venue or outdoor environment.

Safety considerations

Line array speakers come with several safety features during operation and installation to prevent injuries and damage to equipment.

• Load ratings: Manufacturer guidance on maximum loads and rigs should be followed to prevent failure from overloading arrays or rigging hardware collapsing.
• Backup safety straps: Safety straps or cables secured should be used for any primary rigging failures; speakers will not fall if they secondary attached equipment is secured.
• Weatherproofing: Weatherproofing features like seals and covers for drivers mean that precautions can be taken in working with arrays in adverse weather to prevent water damage.
• Heat dissipation: One of the safety issues with the speaker arrays is optimum heat dissipation, which means that components are protected from overheating, especially in confined spaces.
• Power limitations: Amplifiers should be set at appropriate power levels and avoid driving them too hard to prevent damage from excessive power causing speaker blowouts.
• Periodic checks: Periodic checks of the array rigging, drivers, and electrical components for signs of wear and tear ensure that arrays are maintained in optimal condition for safety.