Профессиональный сабвуферный динамик BEYMA 12G40. Инструкция на английском языке

12G40
12G40
G 4 0    S e r i e s
KEY FEATURES
High power handling (400 WAES)
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3” edgewound copper voice coil with polyimide
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fiber glass former
Optimum winding length for increased linear
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excursion
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, made with the highest quality materials and the diaphragm has been carefully developed to
give an extremely flat, smooth response. These characteristics make its integration in compact systems covering the low
frequency range a straightforward task.
Moreover, its parameters has 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=40 l, fb=40 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.

12G40
12G40
G 4 0    S e r i e s
TECHNICAL SPECIFICATIONS                                      DIMENSION DRAWINGS
Nominal diameter                     300 mm.   12 in.
Rated impedance                             8 ohms.
Minimum impedance                         6.7 ohms.
Power capacity*                          400 w AES
Program power                                 800 w
Sensitivity                97 dB     2.83v @ 1m @ 2
Frequency range                         35 - 4000 Hz
Recom. enclosure vol.          20 / 70 l     0.7 / 2.6 ft. 3
Voice coil diameter                    77 mm.   3 in.
Magnetic assembly weight             6.3 kg.   13.9 lb.
BL factor                                 18.4 N / A
Moving mass                                0.062 kg.
Voice coil length                           20 mm.
Air gap height                               8 mm.
X damage (peak to peak)                     28 mm.
MOUNTING INFORMATION                                          MATERIALS
Overall diameter                   312 mm.   12.3 in.             Voice coil: edgewound copper wire with high
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Bolt circle diameter              294.5 mm.   11.6 in.            temperature bonding strength. Polyimide fiber glass
Baffle cutout diameter:                                           former able to withstand high temperatures.
- Front mount                     277.5 mm.  10.9 in.             Cone: paper cone capable of endure the most extre-
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- Rear mount                         280 mm.   11 in.             me conditions.
Depth                              139 mm.   5.47 in.             Surround: treated cloth to assure good retaining of
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Volume displaced by driver             4  l     0.14 ft. 3        elasticity in despite of continuing use.
Net weight                           7.1 kg.   15.6 lb.           Spider: treated cotton fibres.
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Shipping weight                      7.8 kg.   17.2 lb.           Metal parts: anti-corrosion coated back plate
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designed to resist aggressive environmental
THIELE-SMALL PARAMETERS**                                        conditions
Basket: specially designed die cast aluminium bas-
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Resonant frequency, fs                        44 Hz               ket to avoid disturbing resonances.
D.C. Voice coil resistance, Re              6 ohms.           •   Magnet: high Curie temperature ferrite.
Mechanical Quality Factor, Qms                 11.6
Electrical Quality Factor, Qes                  0.3
Total Quality Factor, Qts                       0.3
Equivalent Air Volume to Cms, Vas               81 l          Notes:
* The power capacity is determined according to AES2-1984 (r2003)
Mechanical Compliance, Cms               206 m / N           standard. Program power is defined as the transducer's ability to handle
Mechanical Resistance, Rms                 1.5 kg / s          normal music program material.
Efficiency,   o (%)                        2.3
Effective Surface Area, Sd (m )           0.0530 m 2          ** T-S parameters are measured after an exercise period using a
2
Maximum Displacement, Xmax                   6 mm.            preconditioning power test. The measurements are carried out with a
Displacement Volume, Vd                     316 cm 3          velocity-current laser transducer and will reflect the long term parameters
Voice Coil Inductance, Le @ 1 kHz            2.1 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 ·