Профессиональный сабвуферный динамик BEYMA 18G40. Инструкция на английском языке

18G40
18G40
G 4 0   S e r i e s
KEY FEATURES
High power handling (700 WAES)
•
Waterproof paper cone
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4” edgewound copper voice coil with polyimide
•
fiber glass former
Optimum winding length for increased linear
•
excursion
Spiders of improved temperature behaviour:
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retain good mechanical properties at high power
Designed for woofer applications
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GENERAL DESCRIPTION
This low frequency transducer is specially intended for the most demanding applications. Its design concept arises from the
need of achieve a more resistant  loudspeaker that matches the more and more power given by ultimate amplification systems.
In order to accomplish that, almost every component of the speaker has been reconsidered: its voice coil has the benefits of an
improved manufacturing process and the highest quality materials, while the dual spider configuration includes a nomex spider
that maintains its compliance constant with the applied power. Moreover, the magnetic structure construction generates a
symmetrical magnetic field and, at the same time, provides an efficient thermal path which contributes to heat dissipation.
Furthermore, its parameters have been optimized to obtain an excellent bass response when used in small bass-reflex cabinets.
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=35 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.

18G40
18G40
G 4 0   S e r i e s
TECHNICAL SPECIFICATIONS                                      DIMENSION DRAWINGS
Nominal diameter                     460 mm.   18 in.
Rated impedance                             8 ohms.
Minimum impedance                           7 ohms.
Power capacity*                          700 w AES
Program power                                1400 w
Sensitivity                97 dB     2.83v @ 1m @ 2
Frequency range                         25 - 1500 Hz
Recom. enclosure vol.          80 / 200 l     2.8 / 7 ft. 3
Voice coil diameter                   100 mm.   4 in.
Magnetic assembly weight              9 kg.   19.8 lb.
BL factor                                 22.5 N / A
Moving mass                                0.171 kg.
Voice coil length                           23 mm.
Air gap height                              9.5 mm.
X damage (peak to peak)                     33 mm.
MOUNTING INFORMATION                                          MATERIALS
Overall diameter                  460 mm.   18.11 in.             Voice coil: edgewound copper wire with high
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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: waterproof paper cone capable of endure the
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- Rear mount                      400 mm.   15.75 in.             most extreme conditions.
Depth                            198.5 mm.   7.82 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                          11.5 kg.   25.3 lb.           Spider: dual spider combination made of nomex +
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Shipping weight                      13 kg.   28.6 lb.            polycotton to maintain good mechanical properties
at high applied power.
THIELE-SMALL PARAMETERS**                                    •   Metal parts: anti-corrosion coated back plate
designed to resist aggressive environmental
Resonant frequency, fs                        32 Hz               conditions
D.C. Voice coil resistance, Re              6 ohms.           •   Basket: specially designed die cast aluminium bas-
Mechanical Quality Factor, Qms                 12.7               ket to avoid disturbing resonances.
Electrical Quality Factor, Qes                 0.42           •   Magnet: high Curie temperature ferrite.
Total Quality Factor, Qts                      0.41
Equivalent Air Volume to Cms, Vas              323 l          Notes:
Mechanical Compliance, Cms               137 m / N           * The power capacity is determined according to AES2-1984 (r2003)
Mechanical Resistance, Rms                  3 kg / s          standard. Program power is defined as the transducer's ability to handle
normal music program material.
Efficiency,   o (%)                        2.4
Effective Surface Area, Sd (m )           0.1300 m 2          ** T-S parameters are measured after an exercise period using a
2
Maximum Displacement, Xmax                   7 mm.            preconditioning power test. The measurements are carried out with a
Displacement Volume, Vd                     910 cm 3          velocity-current laser transducer and will reflect the long term parameters
Voice Coil Inductance, Le @ 1 kHz             3 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 ·