Definition 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 features 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.

• 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.

SPECIFICATIONS	al-4	4 x al-4 & 1 x VUEDrive™ V4
DESCRIPTION	Subcompact Line Array Element	Subcompact Line Array System
ACOUSTIC DATA
Frequency Response (+-2.5 dB)	90 Hz to 20 kHz	90 Hz to 20k Hz
Frequency Range (-10 dB)	78 Hz – 26 kHz	70 Hz – 26 kHz
Sensitivity (1W/1m)	93 dB SPL	99 dB SPL
Power Long Term Sine Wave  Before Protection LF:Before Protection HF:	100 watts28 watts	400 watts112 watts
Power Burst (6 dB Crest before clip)LF:HF:	400 watts137 watts	2400 watts550 watts
Max Peak SPL †(band limited pink noise 6 dB crest factor)	119 dB SPL	131 dB SPL
Max SPL Long Term (AVG SPL @1M before protection band limited pink noise)	113 dB SPL	125 dB SPL
Coverage Horizontal	90 degrees – 6 dB	90 degrees – 6 dB
Coverage Vertical	10 degrees – 6 dB	Dependent on array configuration
TRANSDUCER DATA
LF Driver Description	Two 4-inch drivers, Kevlar cones, isobutylene isoprene rubber surrounds, neodymium magnets
HF Driver Description	1-inch exit 34 mm voice coil Pure Truextent® beryllium diaphragm
Impedance	16 Ohms	4 Ohms net 4x 16 ohms
PHYSICAL DATA
Rigging:	Three-point rigging system, provides 0°, 1°, 2.5°, 3.5° 5° , 6°, and 7.5° between array elements.
Connectors	Neutrik NL4 Speakon In and Loop
Cabinet Material	Multi-ply birch hardwood
Cabinet Surface	12 Step Dura-Coat LX – an elastomer synthetic resin chemical coating
Handles	Rear Metal
Dimensions (H x W x D)	5.47 x 19.90 x 10.28 in (139 x 480 x 261 mm)
Weight (per element)	Net: 19.2 lbs (8.7 kg) / Shipped: 23.3 lbs (10.56 kg)
ACCESSORIES
al-4fbl	Long Fly bar for greater down angle and use with al-4SB
al-4PB	Compact Pole Mount bracket holds 4x al-4 acoustic elements
al-4-pin-4x	Extra al-4 Fly Pins (set of four pins)
al-4-fc4x	Flight case holds 4x al-4 acoustic elements and fly bar
†  Measured Max SPL is recommended for system design purposes and represents the average peak output before protection and after power compression. In accordance with common industry practice, calculated data is provided for comparison purposes, and is a theoretical calculation.

Click on image to see full size

Click on image to see full size

The Truextent® Beryllium Advantage

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.

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Read more about the advantages of Truextent beryllium  

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

al-4 Downloads