VT4883
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 Output
1
: 139 dB SPL, 1m (2, half-space, ground-based application)
133 dB SPL, 1m (4, 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)
Optional Accessories
VT4886-AF Array frame for suspension of VT4883, VT4886, or mixed
VT4883/VT4886 arrays. Can also be used for ground stacking.
VT4886-AB Adapter bar for attachment of multiple VT4886-AF array frames
SS4-BK2 Adjustable extension rod with M20 thread for attachment to VT4883,
hand crank height adjustment and patented expanding mandrel system
for secure, vibration-free attachment of optional VT4886-UB accessory
and up to 3x VT4886
1
Calculated maximum SPL based on rated peak power and measured sensitivity
2
AES Standard, one decade pink noise with 6 dB crest factor within device's operational band, free air. Standard AES 2 hr
rating plus long term 100 hr rating.
JBL continually engages in research related to product improvement. Some materials, production methods and design
refinements are introduced into existing products without notice as a routine expression of that philosophy. For this
reason, any current JBL product may differ in some respect from its published description, but will always equal or
exceed the original design specifications unless otherwise stated.
Subcompact Dual 12"
Cardioid-Arrayable
Subwoofer
Application:
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.
Key Features:
䉴
Advanced Technology Components:
Differential Drive
®
, technology, Dual
Neodymium Magnets, Dual Voice Coils,
Direct Cooled™
䉴
Reverse-arrayable for implementation of
gradient cardioid subwoofer configurations
䉴
JBL PlyMax
®
engineered wood materials
provide rigid, yet lightweight enclosure
䉴
Rugged DuraFlex™ exterior finish;
weather-resistant components
䉴
Patented, integrated S.A.F.E.™ suspension
system with premium heat-treated alloys
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.
V
ERTEC 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 premium-
grade 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 multi-
enclosure 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.
VERTEC
®
Series
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