Профессиональный коаксиальный динамик BEYMA 12XA30Nd. Инструкция на английском языке

12XA30Nd
12XA30Nd
C o a x i a l
KEY FEATURES
•      12” bass loudspeaker and 2” exit compression driver
combination
•     Excellent power handling: 350 w AES (L.F. unit) and 90 w
AES (H.F. unit)
•     Extended and linear frequency response (25-20000 Hz)
•     High sensitivity: 98 dB (L.F. unit) and 105 dB (H.F. unit)
•     Low weight (common neodymium magnet system for both
units)
•     Bass loudspeaker designed for compact bass-reflex
cabinets
GENERAL DESCRIPTION
This 12” coaxial loudspeaker is intended for the most demanding professional applications. Its low frequency unit features a 4”
(100 mm) edgewound aluminium ribbon voice coil capable of handle 350 w AES. This bass unit has been optimized in order to fit
in with the most compact bass-reflex systems. The high frequency unit uses a 2.8” (72.2 mm) aluminium ribbon voice coil and a
composite structure diaphragm, that is to say, a titanium dome and polyester surround combination. All these components give
as a result a coherent and extended frequency response with low distortion that ranges from 25 Hz up to 20 kHz. Moreover, the
use of a common neodymium magnet system for both units reduces the weight to 6.3 kg.
FREQUENCY RESPONSE AND DISTORTION CURVES                        FREQUENCY RESPONSE OUT OF AXIS
Note: on axis filtered frequency response measured with loudspeaker
standing on infinite baffle in anechoic chamber, 1w @ 1m.
PREDICTED LOW FREQUENCY RESPONSE                         FREQUENCY RESPONSE OF LF & HF UNITS
Note: bass-reflex cabinet, Vb=60 l, fb=56 Hz
Note: on axis frequency response of low and high frequency units,
1w @ 1m.

12XA30Nd
12XA30Nd
C o a x i a l
TECHNICAL SPECIFICATIONS                                      DIMENSION DRAWINGS
L.F. UNIT
Nominal diameter                     300 mm. 12 in.
Rated impedance                            8 ohms.
Minimum impedance                         7.6 ohms.
Power capacity*                          350 w AES
Program Power                                700 w
Sensitivity                 98 dB 2.83v @ 1m @ 2p
Frequency range                         35-4000 Hz
Recom. enclosure vol.       40 / 100 l 1.49 / 3.53 ft.3
Voice coil diameter                   100 mm. 4 in.
Magnetic assembly weight             4.2 kg. 9.24 lb.
BL factor                                  18.2 N/A
Moving mass                               0.047 kg.
Voice coil length                           16 mm.
Air gap height                               9 mm.
X damage                                    28 mm.              MATERIALS
H.F. UNIT                                                     L.F. UNIT
Rated impedance                           16 ohms.            • Basket: Die cast aluminium
Minimum impedance              13.5 ohms.@ 3.5 kHz            • Cone: Paper
Power capacity                90 w AES above 1 kHz
Frequency range                         0.5 - 20 kHz          • Surround: Plasticised cloth
Sensitivity 1w @ 1m                         105 dB            • Voice coil: Edgewound aluminium ribbon
Voice coil diameter               72.2 mm. 2.87 in.           • Magnet: Neodymium
Flux density                                  1.6 T
BL factor                                  15.3 N/A           H.F. UNIT
Dispersion                              80° conical           • Dome: Titanium
•  Surround:  Polyester
• Voice coil: Edgewound aluminium ribbon
THIELE-SMALL PARAMETERS                                     •  Voice coil former: Kapton
Resonant frequency, fs                        35 Hz           MOUNTING INFORMATION
D.C. Voice coil resistance, Re            6.8 ohms.
Mechanical Quality Factor, Qms                 7.98         Overall diameter                  312 mm.   12.28 in.
Electrical Quality Factor, Qes                 0.22         Bolt circle diameter              295 mm.   11.61 in.
Total Quality Factor, Qts                      0.21         Baffle cutout diameter:
Equivalent Air Volume to Cms, Vas              172 l        - Front mount                     284 mm.   11.18 in.
Mechanical Compliance, Cms               430 mm mm mm / N   - Rear mount                      284 mm.   11.18 in.
Mechanical Resistance, Rms                1.36 kg / s       Depth                             152 mm.    5.98 in.
Efficiency, hh hh ho (%)                        3.3         Volume displaced by driver            6.5 l    0.23 ft. 3
2
Effective Surface Area, Sd (m )           0.0530 m 2        Net weight                          6.3 kg.  13.86 lb.
Maximum Displacement, Xmax                    4 mm          Shipping weight                       7 kg.    15.4 lb.
Displacement Volume, Vd                     210 cm 3
Voice Coil Inductance, Le @ 1 kHz            1.3 mH
Notes:
*The power capacity is determined according to AES2-1984 (r2003) standard.  **T-S parameters are measured after an exercise period using a preconditioning power test.
Program power is defined as the transducer’s ability to handle normal music program material.  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).
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 ·