The VT4883 Subcompact Dual 12" Cardioid- Arrayable Subwoofer Line Array Element is a companion low Frequency extension for the VT4886 subcompact 3-way enclosure. Designed to deliver high quality Sound Reinforcement of sub-low frequencies for a wide variety of live music and A/V support applications, typical uses include concert Audio and multi-media presentations of all types.

The VT4883 is a subcompact Subwoofer housing two 12" long-excursion, Differential Drive low-Frequency transducers. These advanced components, each fitted with dual voice coils and dual magnets, provide an exceptionally high output power-to-weight ratio.

The PlyMax enclosure features: unique vented bandpass topology with optimized component density and minimal footprint; large area corner ports with laminar flow design for reduced turbulence Noise and optimized linearity; integral rubber feet, keyed for aligning surfaces and preventing slippage of stacked systems; pole mount socket for use with optional extension rod. VERTEC suspension systems are engineered for maximum support strength and flexibility. The VT4883's suspension hardware relies on Quick-Release pins and side-mounted suspension tubes to couple units together in rigid arrays, either front-firing or rear-firing for implementation of gradient Cardioid configurations.

Suspension tubes are made from premiumgrade heat-treated Aluminum, hinge bars are plated high tensile steel and Quick-Release pin restraining lanyards are plastic-coated Stainless Steel to resist corrosion.

Subwoofer Line Arrays:
The low-Frequency capabilities of a multienclosure VT4883 array will be determined by the total number of units coupled. The Directivity of a Subwoofer Line Array at any given Frequency is proportional to the product of Frequency and length of the array. The beamwidth will be inversely proportional to the product of the array's length and the Frequency of interest, typically 20-80 Hz for Subwoofer applications. The more Subwoofer elements that are used in the array, the greater Directivity will be at lower frequencies, enabling better pattern control. Medium to large arrays can generate extreme amounts of sub-low Frequency energy.

JBL VT4883 Features:
• PDF Spec Sheet
• Advanced Technology Components: Differential Drive, technology, Dual Neodymium Magnets, Dual Voice Coils, Direct Cooled
• Reverse-arrayable for implementation of gradient Cardioid Subwoofer configurations
• JBL PlyMax engineered wood materials provide rigid, yet lightweight enclosure
• Rugged DuraFlex exterior finish; weather-resistant components
• Patented, integrated S.A.F.E. suspension system with premium heat-treated alloys
  

JBL VT4883 Specifications:

• System
  • Frequency Range (-10 dB): 35 Hz - 300 Hz
  • Frequency Response (+/-3 dB): 40 Hz - 300 Hz
  • Recommended Bandpass: 35 Hz - 200 Hz
  • System Input Power Rating: 2000 W Continuous, 8000 W Peak (AES / 2 Hour), 1600 W Continuous, 6400 W Peak (100 hr)
  • System Sensitivity: 95 dB, 1 W (per Driver) @ 1m (averaged 40 - 140 Hz)
  • Maximum Peak Output1: 139 dB SPL, 1m (2-pi, half-space, ground-based application) 133 dB SPL, 1m (4-pi, free-space, suspended application)
  • Recommended Amplification: (2 x) 1600 - 2000 W into 8 Ohms (transducers powered individually)
  • 3200 - 4000 W into 4 Ohms (transducers powered in parallel)
  • Recommended Signal Crown I-Tech HD, Crown I-Tech, dbx DriveRack 4800, BSS
  • Processing: Audio FDS-366T Omnidrive, BSS Audio Soundweb London
• Transducers
  • Low Frequency: 2 x 2263H-1, 305 mm (12 in) dia., 75 mm (3 in) Dual Coil, Dual
  • Magnet, Neodymium Differential Drive, Direct Cooled
  • Nominal Impedance: 2 x 8 Ohms
  • Input Power Rating 1000 W Continuous, 4000 W Peak (AES / 2 Hour), (each Transducer)2: 800 W Continuous, 3200 W Peak (100 Hour)
• Enclosure
  • Cabinet Construction: Rectangular enclosure. PlyMax engineered wood composite structure, DuraFlex finish, 4 handles, integral pole mount adapter (M20 thread)
  • Suspension System: Patented S.A.F.E. hardware, integral hinge bars nest in suspension tubes on enclosure sides. Quick Release pins with restraining lanyards.
  • Set of 4 hinge bars included. Reverse-arrayable for gradient Cardioid configurations. Suspend with VT4886-AF Array Frame.
  • Grille: Black perforated steel, foam backed
  • Input Connectors: Rear panel: Neutrik Speakon NL-4 and NL-8 (2x each)
  • Front panel: Neutrik Speakon NL-4 (1x) for gradient Cardioid configurations. All connectors in parallel, internal wiring; transducers circuited individually 1+/-, 2+/- (2 x 8 Ohm) (NL4 and NL8)
  • Dimensions (H x W x D): 398 mm x 579 mm x 643 mm (15.7 in x 22.8 in x 25.3 in)
  • Net Weight: 29.5 kg (65 lbs)
  • Shipping Dimensions (W x H x D): 584 mm x 457 mm x 699 mm (23" x 18" x 27.5")
  • Shipping Weight: 35.4 kg (78 lbs)

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