Профессиональный сабвуферный динамик BEYMA 18G550. Инструкция на английском языке

18G550
18G550
G 5 0   S e r i e s
KEY FEATURES
High power handling (900 WAES)
•
4.5” edgewound copper voice coil with polyimide
•
fiber glass former
Large Xmax allowing longer voice coil
•
displacements
Dual spider configuration of improved
•
temperature behaviour: retain good mechanical
properties at high power
Additional heat dissipation due to the use of a
•
metal intercooler
Designed for high demanding subwoofer and
•
woofer applications
GENERAL DESCRIPTION
This 18” bass loudspeaker has been specifically designed to deliver high impact bass response, with exceptional high power
handling capacity (900 WAES). It incorporates an edgewound copper ribbon voice coil (4.5” diameter) made of high quality
materials: high temperature magnet wire and polyimide fiber glass former. Another point of interest is its massive vented
magnetic structure, which combined with an optimum cooling system allows a fast heat exchange, thus reducing the thermal
power compression. Furthermore, the use of a dual spider assembly assures that this loudspeaker can handle a real high power
with an extremely controlled voice coil displacement. This model covers the low frequency range with smooth response, low
harmonic distortion and high efficiency. It is mostly recommended for high demanding subwoofer and woofer applications.
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
Note: Bass-reflex cabinet, Vb=150 l, fb=38 Hz     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.

18G550
18G550
G 5 0   S e r i e s
TECHNICAL SPECIFICATIONS                                      DIMENSION DRAWINGS
Nominal diameter                     460 mm.   18 in.
Rated impedance                             8 ohms.
Minimum impedance                         6.3 ohms.
Power capacity*                          900 w AES
Program power                                1800 w
Sensitivity                98 dB     2.83v @ 1m @ 2
Frequency range                         25 - 1500 Hz
Recom. enclosure vol.          80 / 200 l     2.8 / 7 ft. 3
Voice coil diameter                 114 mm.   4.5 in.
Magnetic assembly weight               10 kg.   22 lb.
BL factor                                 24.4 N / A
Moving mass                                0.190 kg.
Voice coil length                           25 mm.
Air gap height                               11 mm.
X damage (peak to peak)                     40 mm.
MOUNTING INFORMATION                                          MATERIALS
Overall diameter                  460 mm.   18.11 in.             Voice coil: edgewound copper wire with high
•
Bolt circle diameter              438 mm.   17.24 in.             temperature bonding strength. Polyimide fiber glass
Baffle cutout diameter:                                           former able to withstand high temperatures.
- Front mount                      415 mm.  16.34 in.             Cone: special cone prepared to endure high
•
- Rear mount                      400 mm.   15.75 in.             displacement forces.
Depth                            205.5 mm.   8.09 in.             Surround: treated cloth to assure good retaining of
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Volume displaced by driver            13  l     0.46 ft. 3        elasticity in despite of continuing use.
Net weight                        12.60 kg.   27.78 lb.           Spider: dual spider combination that maintains
•
Shipping weight                   14.50 kg.   31.97 lb.           good mechanical properties at high applied power.
Metal parts: anti-corrosion coated back plate
•
THIELE-SMALL PARAMETERS**                                        designed to resist aggressive environmental
conditions
Resonant frequency, fs                        36 Hz           •   Basket: specially designed die cast aluminium bas-
D.C. Voice coil resistance, Re            5.3 ohms.               ket to avoid disturbing resonances.
Mechanical Quality Factor, Qms                 8.88           •   Magnet: high Curie temperature ferrite.
Electrical Quality Factor, Qes                 0.39
Total Quality Factor, Qts                      0.37
Equivalent Air Volume to Cms, Vas              210 l          Notes:
Mechanical Compliance, Cms               103 m / N           * The power capacity is determined according to AES2-1984 (r2003)
Mechanical Resistance, Rms                 5.5 kg / s         standard. Program power is defined as the transducer's ability to handle
normal music program material.
Efficiency,   o (%)                        2.5
Effective Surface Area, Sd (m )           0.1200 m 2          ** T-S parameters are measured after an exercise period using a
2
Maximum Displacement, Xmax                   9 mm.            preconditioning power test. The measurements are carried out with a
Displacement Volume, Vd                    1075 cm 3          velocity-current laser transducer and will reflect the long term parameters
Voice Coil Inductance, Le @ 1 kHz            1.4 mH           (once the loudspeaker has been working for a short period of time).
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 ·