Профессиональный сабвуферный динамик BEYMA 15LW30. Инструкция на английском языке

15LW30
15LW30
Nd LW30  S e r i e s
KEY FEATURES
•   Ultra light loudspeaker (4.47 kg. 9.83 lb.)
•   3” (77 mm.) voice coil
•   High sensitivity: 99 dB
•   High performance neodymium magnet system
•   Half the weight than a conventional ferrite model
•   Large Xmax: 7 mm.
•   Extra vented magnetic structure
•   Designed for extremely compact woofer applications
GENERAL DESCRIPTION
This 15” bass loudspeaker has been designed to achieve a very light loudspeaker with superior technical specifications. Thus,
the magnetic system incorporates a high energy neodymium magnet, reducing the total mass of the unit to less than 50% of a
conventional ferrite model. Moreover, the heat dissipation has been improved with the use of extra-cooling. The 15LW30
incorporates a 3” voice coil made with high quality materials: round copper wire with high temperature bonding strength and
polyimide former. The 15LW30 is highly recommended for those woofer applications that require a light and small loudspeaker
with excellent technical specifications.
FREQUENCY RESPONSE AND DISTORTION CURVES                            FREE AIR IMPEDANCE CURVE
Note: on axis frequency response measured with loudspeaker standing
on infinite baffle in anechoic chamber, 1w @ 1m.
PREDICTED LOW FREQUENCY RESPONSE                              POWER COMPRESSION LOSSES
6
5
4
dB  3
2
1
50      150      250     350      450
Note: Bass-reflex cabinet, Vb=60 l, fb=30 Hz                           Power (W)
Note: These losses are calculated from a five minutes AES power test
applying band limited pink noise (25-1200 Hz). The loudspeaker is free-air
standing.

15LW30
15LW30
Nd LW30  S e r i e s
TECHNICAL SPECIFICATIONS                                      DIMENSION DRAWINGS
Nominal diameter                      380 mm. 15 in.
Rated impedance                             8 ohms.
Minimum impedance                           7 ohms.
Power capacity *                         450 w AES
Program power                                 900 w
Sensitivity                  99 dB  2.83v @ 1m @ 2?
Frequency range                         35 - 4000 Hz
Recom. enclosure vol.          40 / 80 l  1.41 / 2.83 ft. 3
Voice coil diameter                     77 mm. 3 in.
Magnetic assembly weight             3.45 kg. 7.59 lb.
BL factor                                 18.9 N / A
Moving mass                                0.083 kg.
Voice coil length                           17 mm.
Air gap height                               8 mm.
X damage (peak to peak)                     30 mm.
MATERIALS
MOUNTING INFORMATION
•   Voice coil: round copper wire with high temperature
Overall diameter                   388 mm.  15.28 in.             bonding strength. Polyimide former able to withstand
Bolt circle diameter               370 mm.  14.57 in.             high temperatures.
Baffle cutout diameter:                                       •   Cone: high stiffness paper cone.
- Front mount                      352 mm.  13.86 in.         •   Surround: treated cloth to guarantee good retaining
- Rear mount                      353 mm.    13.9 in.             of elasticity in despite of continuing use.
Depth                             168 mm.    6.61 in.         •      Spider: cotton spider.
Volume displaced by driver              5 l    0.18 ft. 3     •     Metal parts: anti-corrosion coated parts designed to
Net weight                          4.47 kg.   9.83 lb.           resist aggressive enviromental conditions.
Shipping weight                      5.5 kg.   12.1 lb.       •     Basket: specially designed die cast aluminium bas-
ket to avoid disturbing resonances.
THIELE-SMALL PARAMETERS **                                  •     Magnet: high energy neodymium magnet.
Resonant frequency, fs                        32 Hz
D.C. Voice coil resistance, Re            6.1 ohms.           Notes:
Mechanical Quality Factor, Qms                  8.4           *The power capacity is determined according to AES2-1984 (r2003) standard.
Electrical Quality Factor, Qes                 0.29           Program power is defined as the transducer’s ability to handle normal music program material.
Total Quality Factor, Qts                      0.28           **T-S parameters are measured after an exercise period using a preconditioning power test.
Equivalent Air Volume to Cms, Vas              325 l          The measurements are carried out with a velocity-current laser transducer and will reflect the long
term parameters (once the loudspeaker has been working for a short period of time).
Mechanical Compliance, Cms               309 µµ µµ µm / N
Mechanical Resistance, Rms                 2.1 kg / s
Efficiency, ?? ?? ?o (%)                        3.5
Effective Surface Area, Sd (m )           0.0880 m 2
2
Maximum Displacement, Xmax                   7 mm.
Displacement Volume, Vd                     611 cm 3
Voice Coil Inductance, Le @ 1 kHz            1.4 mH
a c u s t i c a  b e y m a , s . a .
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 ·