Профессиональный динамик СЧ/НЧ BEYMA 8BR40/N. Инструкция на английском языке

8BR40/N
LOW FREQUENCY TRANSDUCER
KEY FEATURES
•   It incorporates a curvilinear cone attached to a rubber
surround, in order to provide suspension stability and to allow
maximum excursion linearity with high sensitivity and
extremely low distortion.
•   It has been specifically designed to deliver exceptional low
and mid frequency reproduction.
DIMENSION DRAWINGS
TECHNICAL SPECIFICATIONS
Nominal diameter                      200 mm.   8 in.
Rated impedance                              8 ohms
Minimum impedance                          6.8 ohms
Power capacity*                           50 w RMS
Program power                                 100 w
Sensitivity                 90 dB   2.83v @ 1m @ 2?
Frequency range                         35 - 6000 Hz
Recom. enclosure vol.         20 / 60 l     0.7 / 2.12 ft. 3
Voice coil diameter                   25.8 mm.  1 in.
Magnetic assembly weight               1 kg.   2.2 lb.
BL factor                                  6.9 N / A
Moving mass                                0.025 kg.
Voice coil length                            16 mm
Air gap height                                6 mm
X damage (peak to peak)                      20 mm
MOUNTING INFORMATION
THIELE-SMALL PARAMETERS**                                   Overall diameter                211.5 mm.        8 in.
Bolt circle diameter            198.3 mm.     7.8 in.
Baffle cutout diameter:
Resonant frequency, fs                      33.2 Hz
- Front mount                   179.5 mm.   7.06 in.
D.C. Voice coil resistance, Re             6.5 ohms
- Rear mount                    182.5 mm.   7.44 in.
Mechanical Quality Factor, Qms                 2.61
Depth                             77.5 mm.   3.05 in.
Electrical Quality Factor, Qes                 0.73
Volume displaced by driver           1.5 l.   0.05 ft. 3
Total Quality Factor, Qts                      0.57
Net weight                         1.36 kg.   2.99 lb.
Equivalent Air Volume to Cms, Vas            61.35 l
Shipping weight                    1.55 kg.   3.41 lb.
Mechanical Compliance, Cms              907.7 µµ µµ µm / N
Mechanical Resistance, Rms                2.02 kg / s        Notes:
Efficiency, ?? ?? ?o (%)                        0.3
*The power capacity is determined according to AES2-1984 (r2003) standard.
2
Effective Surface Area, Sd (m )            0.022 m 2         Program power is defined as the transducer’s ability to handle normal music program material.
Maximum Displacement, Xmax***                 6 mm           **T-S parameters are measured after an exercise period using a preconditioning power test.
Displacement Volume, Vd                     130 cm 3         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).
Voice Coil Inductance, Le @ 1 kHz            0.8 mH
***The Xmax is calculated as (Lvc - Hag)/2 + Hag/3.5, where Lvc is the voice coil length and Hag is
the air gap height.
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8BR40/N
LOW FREQUENCY TRANSDUCER
FREE AIR IMPEDANCE CURVE
FREQUENCY RESPONSE AND DISTORTION
Note: on axis frequency response measured with loudspeaker standing on infinite baffle in anechoic chamber, 1w @ 1m.
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 ·
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