al-4 Subcompact Line Array System

 

The al-4 Subcompact Line Array System utilizes advanced technologies to extract unparalleled performance from an ultra-compact package. With cutting-edge technologies such as a beryllium compression driver, Kevlar/Neo low-frequency transducers, and precision amplification and DSP, the highly scalable al-4 system brings pristine sound quality and coveted line array performance to more applications than ever before.

The al-4 Line Array System is made up of the al-4 Acoustic Element, the rack mount V4 Systems Engine, which provides amplification, DSP and system control and the al-4SB flyable isobaric subwoofer, along with a wide range of accessories for suspension and transportation.  The system is sold in standard blocks, with eight al-4 Acoustic Elements and a single V4 Systems Engine (designed to power up to 8 al-4 elements) comprising a single block. Multiple al-4 blocks can be combined to address larger applications.

FEATURES:

  • al-4 elements make it easy to scale al-4 arrays for various applications (one rental inventory serves a variety of applications)
  • Fly up to 24 al-4 elements from a single fly-bar
  • 90° horizontal coverage angle per al-4 element
  • VUE designed 1-inch exit neodymium compression driver with Truextent® beryllium diaphragm
  • VUE designed dual 4-inch Kevlar cone neodymium woofers
  • Compact and lightweight – each al-4 element is 18.9 x 5.5 x 10.3 inches (W x H x D) and 18 lbs.

 

Unlike other compact line array systems that have fixed vertical coverage, the al-4 functions more like full-scale line array systems, with the vertical coverage limited only by the number of elements in the array rather than by the physical limitations of the cabinet design. This flexibility allows al-4 rental inventory to serve a variety of uses. From small “one-man” shows to more demanding productions, scaling up or down is simply a matter of adding more elements to the array.

The al-4 by itself produces flat response down to 90 Hz, for applications where extended low-frequency response is required, the al-4 can be arrayed with the al-4SB. It is also fully compatibility with the full family of VUE subwoofers so your sure to have the output and bandwidth you need for virtually  any applications requirements.  Flexible suspension options allow flying, ground stacking, attachment to a lighting grid and pole mounting on stands or atop VUE subwoofers.

CST ™ (Continuous Source Topology)

al-12-Vue-system-overview-03-frontDefinition of Topology: “The study of geometric properties and spatial relations unaffected by the continuous change of shape or size of figures.”

CST™ re-defines the concept of system ‘Scalability’. Acoustic Linearity Architecture paired with CST™ allows the use of multiple different al-Class elements together in an array without sacrificing the elemental line-array theory basics, resulting in a coherent and symmetrical line-source from the largest cabinet at the top of the array, to the smallest under-hung elements. The family of al-Class products feature three line array elements for maximum flexibility in sound design, inventory profitability, unbeatable coherency. Furthermore, the VUE al-Class Line Arrays support VUEPoint™ Beam Forming to further achieve unsurpassable performance and coverage control in any given room configuration.

VUE’S ACOUSTIC LINEARITY WITH CST™ ANOINTS VUE’S al-CLASS AS THE BENCHMARK IN COMPLETE LINE ARRAY SOLUTIONS

al-Class Combination Arrays
The VUE al-Class line arrays are the only system that can combine ultra-compact (al-4), medium format (al-8) and large-format (al-12) enclosures into a single coherent array without compromising  the mid- and high-frequency coherency. This design feature enables a level of unparalleled system versatility. One can create virtually seamless arrays fully optimized for every parameter including coverage, sound pressure level, size and weight. This also expands the capitalization of a rental inventory for all portable applications.

Infinitely Scalable

 
  • Each al-4 Subcompact Line Array System “block” includes eight al-4 acoustic elements and a single V4 Systems Engine
  • Scalable by adding or removing al-4 acoustic elements or combining multiple al-4 blocks
  • Optional flying, ground stack and pole-mount accessories available

The al-4 Line Array System is made up of the al-4 Acoustic Element and the rack mount V4 Systems Engine, which provides amplification, DSP and system control for up to 8 elements. The system is sold in standard blocks, with eight al-4 Acoustic Elements and a single V4 Systems Engine comprising a single block. Multiple al-4 blocks can be combined to address larger applications.

Unlike other compact line array systems that have a fixed vertical coverage, the al-4 functions more like full-scale line array systems, with the vertical coverage limited only by the number of elements in the array rather than by the physical limitations of the cabinet design. This flexibility allows al-4 rental inventory to serve a variety of uses. From small “one-man” shows to more demanding productions, scaling up or down is simply a matter of adding more elements to the array.

For applications where extended low-frequency is required, the al-4 is fully compatibility with a variety of VUE subwoofers. Flexible suspension options allow flying, ground stacking, and pole mounting on stands or atop VUE subwoofers.

al-4-Arrays-03

al-accessor-02

Transducers

 
The ultra-compact al-4 element utilizes an M-T-M (LF-HF-LF) configuration for symmetrical horizontal consistency with two 4-inch Kevlar cone neodymium woofers flanking a precision-engineered, 1-inch exit neodymium compression driver featuring a Truextent® beryllium diaphragm.

Beryllium technology allows the compression driver to deliver dramatic improvements in HF extension and response linearity that simply cannot be matched by traditional aluminum or titanium designs. The beryllium compression driver is mounted to a precision waveguide delivering 90° of horizontal coverage and 10° of vertical coverage when measured as a single unit.

All three transducers are housed in a rugged birch plywood enclosure protected by a 12-step Dura-Coat LX finish. Integrated flying hardware allows quick assembly of arrays of up to 16 elements per fly-bar. Rear panel I/O includes NL4 Input and Loop connections for easy daisy-chaining of line array elements.

al4-back-IMG_9119

al-web-transducer-01

VUEDrive™ V4 Systems Engine

  • LF 1600W x 2 sine wave – HF 550W x 2 sine wave
  • 64-bit digital processing including EQ, time alignment, crossover management, and speaker protection
  • Ultra-premium converters provide 118 dB of dynamic range
  • Input Delay up to 2 seconds per channel
  • LCD display for easy user interface
  • Mac or PC compatible software control
  • Maximum input level of +23dB for the most demanding applications
  • Latency < 1ms (Typical 640 microsecond)
  • Compact 2U rack-mount chassis

The compact V4 Systems Engine is a 2-in/4-out configuration providing four discrete channels of amplification with more than enough “oomph” to bi-amp as many as eight al-4 elements.

Inside each V4 chassis are four dedicated amplifiers supplying two channels at 1600W each for the low-frequency, and two channels at 550W each for the high frequency. And that’s clean, pure sine wave power rather than the “peak burst” measurement our competition prefers to use.

In addition to amplification, the V4 Systems Engine also handles all system processing and management functions, including speaker protection as well as system-optimized alignment of EQ, time and crossover functions. Rear panel signal connections include dual XLR and AES/EBU inputs, with a pair of NL4 connectors for loudspeaker outputs.

THE VUEDrive™ V4 Systems Engine provides power and dsp for up to 8 al-4 Acoustic Elements

v-4-back-proto-IMG_8178

V4 Rear Panel

Specifications

vue-al-4-datasheet-23-webspecs

Dimensions

Click on image to see full size
al-4-dim-draw-05

Horizontal Data

Click on image to see full size
al-4-ploar-data-01al-4-ballon-Horzontl-coverage-map

Beryllium

 

The Truextent® Beryllium Advantage

be-diaphagm-03

h-Class full range systems and al-Class line arrays all employ VUE-designed compression drivers that feature a Truextent® beryllium diaphragm at their core. Beryllium outperforms both aluminum and titanium thanks to an extremely high stiffness-to-mass ratio, which dramatically reduces mechanical deformation (breakup) and shifts resonant frequencies outside the audible range. The net result is a more defined HF at much higher SPLs than more conventional materials.
Beryllium’s near-perfect pistonic motion results from its extremely high stiffness-to-mass ratio, dramatically reducing mechanical deformation (breakup) and shifting resonant frequencies outside the audible range.
be-domes0-01

Lower Mass Equals Greater AccelerationBeryllium has the lowest density-to-mass ratio of any metal used for compression driver diaphragms. Acceleration is the rate of change of velocity. Density measures mass per unit volume. A lower overall mass allows for greater acceleration, which increases both efficiency and frequency extension.
Acceleration

Beryllium resonance is 2.6 times higher than titanium or aluminium of the same size, as shown by this plot of machined tuning forks exactly the same dimensions.
tunning-forks

Read more about the advantages of Truextent beryllium 

al-4 Suspension System

Update procedure & instructions for arraying (pre-november 2014) al-4s : http://youtu.be/WblSxZfOraU

al-4-updated-rigging-IMG_5185

Downloads

al-4 Downloads

TitleDownload
VUEDrive Current Draw (V4, V6, V3)
  1 files      74 downloads
Download
White Paper: VUE al-CLASS of Scalable Line Arrays: ACOUSTIC LINEARITY Developed at a Systems Engineering Level (PDF)
  1 files      3285 downloads
Download
White Paper: VUE al-CLASS OF SCALABLE LINE ARRAYS: ACOUSTIC LINEARITY DEVELOPED AT A SYSTEMS ENGINEERING LEVEL (PDF)
  1 files      160 downloads
Download
al-8SBFB Drawing (pdf)
  1 files      378 downloads
Download
al-4SBFB Drawing (pdf)
  2 files      351 downloads
Download
al-4 EASE /EASE Focus GLL File
  1 files      398 downloads
Download
al-4 Data Sheet (pdf)
  1 files      606 downloads
Download
al-4 BGV certification for al-4 (PDF)
  1 files      428 downloads
Download
al-8-ufb Combo Array Adaptor (RevA) Detailed Drawing (PDF)
  1 files      406 downloads
Download
al-4-fbl Long Fly Bar (RevB) Detailed Drawing (PDF)
  1 files      340 downloads
Download
al-4-fbl Long Fly Bar (RevB) Detailed Drawing (DXF)
  1 files      265 downloads
Download
al-4-fb Fly Bar Detailed Drawing DXF
  1 files      503 downloads
Download
al-4-fb Fly Bar Detailed Drawing PDF
  1 files      377 downloads
Download
al-4 Detailed Drawing PDF
  1 files      485 downloads
Download
al-4 Detailed Drawing DXF
  1 files      623 downloads
Download
al-4-sb Subwoofer Drawing (pdf)
  1 files      444 downloads
Download
al-4-sb Subwoofer Drawing (DXF)
  0 files      417 downloads
Download
al-4-sb Flying Subwoofer Datasheet (pdf)
  1 files      643 downloads
Download
VUE System Definition Files (GLL’s) – Single Zip for EASE Focus
  1 files      1827 downloads
Download