Профессиональный динамик ВЧ BEYMA WL4. Инструкция на английском языке

WL-4
WL-4
LINE ARRAY                  DRIVER
KEY FEATURES
•   Wave guide fulfilling requirements for Line Array applications.
•      4’’ x 0.5’’ rectangular exit
•   Neodymium magnetic circuit for high efficiency.
•   Effective acoustical coupling up to 18 kHz.
•   True 105 dB sensitivity 1w @ 1m (averaged 1-7 kHz).
•   Extended frequency range: 0.7 - 20 kHz.
•   1.75” voice coil for excellent power handling (40 w AES).
GENERAL DESCRIPTION
This combination of high power neodymium compression driver with wave guide gives a straightforward solution to build a Line
Array System, solving the difficult problem of achieving an optimum coupling between adjacent high frequency transducers.
Instead of using expensive and complicated wave-shaping devices, a simple but effective wave guide transforms the circular
aperture of the compression driver into a rectangular surface, without excessive angle aperture to provide low curvature to the
acoustic wavefront, arriving to fulfill the curvature requirement for optimal acoustic coupling between adjacent sources until
18 kHz. This is achieved with the minimum possible length for low distortion, but without being excessively short, which would
cause strong high frequency interferences. This waveguide can be combined with loudspeakers of different diameters but it
specially matches with 8’’, 6” and 5” loudspeakers.
FREQUENCY RESPONSE AND DISTORTION CURVES                            FREE AIR IMPEDANCE CURVE
Note: on axis frequency response measured with two waveguides
coupled to a 90? x 5? horn in anechoic chamber, 1w @ 1m.
HORIZONTAL DISPERSION                                      VERTICAL DISPERSION
Notes: dispersion measured with two waveguides coupled to a 90? x 5?  Notes: dispersion measured with two waveguides coupled to a 90? x 5?
horn in anechoic chamber, 1w @ 2m.                       horn in anechoic chamber, 1w @ 2m.
All angle measurements are from the axis (45? means ±45?)  All angle measurements are from the axis (45? means ±45?)

WL-4
WL-4
LINE ARRAY                  DRIVER
TECHNICAL SPECIFICATIONS                                      DIMENSION DRAWINGS
Throat diameter                        20.5 mm. 0.8 in.
Rated impedance                               8 ohms.
Minimum impedance                   5.5 ohms. @ 4.5 kHz
D.C. Resistance                             5.6 ohms.
Power capacity *                 40 w AES above 1.5 kHz
Program power                        80 w above 1.5 kHz
Sensitivity **                        105 dB 1 w @ 1m
coupled to a 90? x 5? horn
Frequency range                            0.7 - 20 kHz
Recommended crossover   1500 Hz or higher (12 dB/oct. min.)
Voice coil diameter                   44.4 mm. 1.75 in.
Magnetic assembly weight                 0.6 kg. 1.32 lb.
Flux density                                     1.8 T
BL factor                                       8 N/A
Notes:
MOUNTING INFORMATION                                        *The power capacity is determined according to AES2-1984 (r2003) standard.
Program power is defined as the transducer’s ability to handle normal music program material.
**Sensitivity was measured at 1 m distance, on axis, with 1 w input, averaged in the range 1-7 kHz.
Overall diameter                       80 mm.   3.15 in.
Depth                                 195 mm.   7.68 in.
Mounting                      Four 6 mm. diameter holes
Net weight (1 unit)                     1.1 kg.   2.42 lb.
Shipping weight (2 units)               2.6 kg.   5.72 lb.
MATERIALS
•   Waveguide:  aluminium.
•   Driver diaphragm: polyester.
•   Driver voice coil: edgewound aluminium ribbon wire.
•   Driver voice coil former: kapton.
•   Driver magnet: neodymium.
Poligono Industrial Moncada II · C/. Pont Sec, 1c · 46113 MONCADA - Valencia (Spain)
· Tel. ( 34 ) 96 130 13 75 · Fax ( 34 ) 96 130 15 07 · http://www.beyma.com · E-mail: beyma@beyma.com ·