LA8 / LA15S
COMPACT LINE ARRAY SYSTEM
When Waveburg acoustics decided to build and design this compact line array,it had two objectives in mind.
1-Staying away from harsh professional stereotype sound quality
2-Best and most natural possible reproduction of instruments and human tonal range at the highest possible SPL with minimum Harmonic distortion.
This approach to design has ruled out several elements of which,using aluminum or industrial material in construction of the high frequency horns and waveguides. If you ever listened to a metallic or plastic violin ,you will instantly realize the reason. Carefully designed wooden waveguides based on the mechanical Bessel function,has provided the LA8 with a horizontal dispersion of 120 degrees +/- 5 .5 dB.
Most impressive is the clarity and HI FI quality of sound that resembles audiophile equipment. Along with the angles at which the 8 inch drivers are placed on the front baffle the overall horizontal dispersion is way beyond what is expected from a compact line array.
The total group delay of the Mid bass drivers is 8 ms at 1.2 kHz,which is way below the norm of a pro application. This is due to the placement and the large Helmholtz resonator exit surface. Coupling of the Mid bass drivers to the cabinet went through a long process of reverse engineering to achieve the minimum possible Ratio of vent acceleration and velocity to driver acceleration and velocity. This in turn minimizes the vent noise and sound coloration associated with bass reflex cabinets.
Overall speed was a primary target in the design process, this was achieved by tuning the Q of the cabinet to provide a very small cone excursion ,well below the Xmax of the high efficiency 8 inch drivers.
The LA8 can be used in 2 impedance load configurations,16 Ohms and 4 Ohms. Using the 16 Ohms configuration will allow the user to use 4 units on each side of a power full amplifier (such as camco Vortex 4) minimizing wiring and cost. A speaker like the LA8 needed a subwoofer that can cope with the quality and speed of its very soul.
The 15 inch 4 inch voice coil driver used to complement the LA8 is one the industry best extended low frequency drivers. Pumping 98 dB/1watt of SPL with +/- 9 mm of excursion ( Xmax) and 700 watts of continuous power handling. Originating from a Qts of 0.27 and 24.3 Tm BL product,this driver has a very impressive Low frequency response extension with a huge magnetic field to control it. And this is where this subwoofer is a champion, lots of bass with lots of control and loads of power handling.
• Patented high frequency waveguide horn,wooden structure
• Wide High frequency 120° dispersion optimized for use in wide areas
• Neodymium HF compression drivers
• High efficiency, long excursion with flat response 8 inch Mid bass drivers
• Proprietary flying ware, adjustable and modular
• 120 degree horizontal dispersion
• 2 Optional Impedance loads, 4 or 16 Ohms (Specifying upon order)
• Bi amp configurations
Frequency and Impedance Curve
System Configuration Bi-amp Mid-High unit Bass Reflex Subwoofer
MB/LF 2 x 8 inch High output Mid-bass driver 15 inch High Fidelity Subwoofer
HF 2 x 1-1/3 inch voice coil, 1 inch exit Driver on --
Wooden hand-made Waveguide Horn
+/-3dB 85 Hz to 20k Hz 45 Hz to 500 Hz
-10dB 65 Hz to 21k Hz 38 Hz to 550 Hz
Sensitivity (SPL, 1W@1m) LM: 98 db SUB : 96 db
HF : 110 dB
Impedance MB : 16 ohm SUB : 8 ohm
HF : 16 ohm
Power Rating (LF / HF)
Continuous (2) 400 W / 60 W 700 W
Program (3) 800 W / 120 W 1400 W
Peak (4) 1600 W / 240 W 2800 W
Calculated Maximium Sensitivity (LF / HF)
Continuous 124 dB / 128 dB 124 dB
Program 127 dB / 131 dB 127 dB
Peak 130 dB / 134 dB 130 dB
Horizontal 120° --
Enclosure Multil-layer Birch Plywood Construced Multil-layer Birch Plywood Construced
Finishing Cabinet :Black Texture Cabinet : BlackTexture
Mounting Hardware Full flying hardare & removable pins Full flying hardare & removable pins
Connectors 2 x Speakon 2 x Speakon
1+/1- (MB+/MB-), 2+/2- (HF+/HF-) 1+/1- (LF+/LF-), 2+/2- (Parallel thru)
Protective Grille 15 Guage perforated steel 15 Guage perforated steel
Dimensions 254mm(H) x 814mm(W) x 370mm(D) 500mm(H) x 815mm(W) x 535mm(D)
Net Weight 25kgs (55lbs) 42kgs (92.4lbs)
Packing Flightcase carring 2 pcs each Flightcase carring 1 pc each