Профессиональный сабвуферный динамик BEYMA 8G40. Инструкция на английском языке

8G40
8G40
G 4 0   S e r i e s
TECHNICAL SPECIFICATIONS                                      DIMENSION DRAWINGS
Nominal diameter                       200 mm. 8 in.
Rated impedance                             8 ohms.
Minimum impedance                         7.3 ohms.
Power capacity *                         250 w AES
Program power                                 500 w
Sensitivity                  95 dB  2.83v @ 1m @ 2p
Frequency range                         65 - 6000 Hz
Recom. enclosure vol.         10 / 30 l  0.35 / 1.06 ft. 3
Voice coil diameter                  62.4 mm. 2.5 in.
Magnetic assembly weight                3 kg. 6.6 lb.
BL factor                                 12.2 N / A
Moving mass                                0.021 kg.
Voice coil length                           16 mm.
Air gap height                               7 mm.
X damage (peak to peak)                     23 mm.
MATERIALS
MOUNTING INFORMATION
•  Voice coil: aluminium wire with high temperature
Overall diameter                   212 mm.   8.35 in.            bonding strength. Polyimide fiber glass former able
Bolt circle diameter               198 mm.     7.8 in.           to withstand high temperatures.
Baffle cutout diameter:                                       •  Cone: paper cone capable to endure the most extre-
- Front mount                     181 mm.     7.12 in.           me conditions.
- Rear mount                      181 mm.     7.12 in.        •  Surround: treated cloth to assure good retaining of
Depth                               96 mm.   3.78 in.            elasticity in despite of continuing use.
Volume displaced by driver              2 l    0.05 ft. 3     •  Spider: treated cotton fibres.
Net weight                           3.3 kg.   7.26 lb.       •  Metal parts: anti-corrosion coated back plate
Shipping weight                    3.45 kg.     7.6 lb.          designed to resist aggressive environmental
conditions.
THIELE-SMALL PARAMETERS **                                   •  Basket: specially designed die cast aluminium bas-
ket to avoid disturbing resonances.
Resonant frequency, fs                        70 Hz           •  Magnet: high Curie temperature ferrite.
D.C. Voice coil resistance, Re            6.1 ohms.
Mechanical Quality Factor, Qms                 6.83
Electrical Quality Factor, Qes                 0.38           Notes:
Total Quality Factor, Qts                      0.36           *The power capacity is determined according to AES2-1984 (r2003) standard.
Equivalent Air Volume to Cms, Vas               17 l          Program power is defined as the transducer’s ability to handle normal music program material.
Mechanical Compliance, Cms               246 mm mm mm / N     **T-S parameters are measured after an exercise period using a preconditioning power test.
Mechanical Resistance, Rms                 1.4 kg / s         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).
Efficiency, hh hh ho (%)                        1.5
Effective Surface Area, Sd (m )           0.0220 m 2
2
Maximum Displacement, Xmax                  4.5 mm.
Displacement Volume, Vd                      99 cm 3
Voice Coil Inductance, Le @ 1 kHz            1.3 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 ·

8G40
8G40
G 4 0   S e r i e s
KEY FEATURES
•   High power handling (250 w AES)
•   2.5” (62.4 mm.) aluminium voice coil with polyimide
fiber glass former
•   Optimum winding length for increased linear
excursion
•   Designed for woofer applications
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
Note: Bass-reflex cabinet, Vb=30 l, fb=45 Hz