Профессиональный сабвуферный динамик BEYMA 12LW30/N. Инструкция на английском языке

12LW30/N
LOW FREQUENCY TRANSDUCER
www.beyma.com                                                                          LW30 Series
KEY FEATURES
?  Low weight: 3,9 kg
?  3” copper voice coil
?  High power handling: 450 W AES
?  High sensitivity: 96 dB
?  High performance neodymium magnet system
?  Extended controlled displacemente: X MAX  ± 7 mm
?  Extra vented magnetic structure
?  Designed for compact woofer applications
TECHNICAL SPECIFICATIONS                                         DIMENSION DRAWINGS
Nominal diameter                   300 mm        12 in
Rated impedance                                8 ?
Minimum impedance                              7 ?
Power capacity*                           450 W AES
Program power                                900 W
Sensitivity                   96 dB     1W / 1m @ Z N
Frequency range                        40 - 4.000 Hz
Recom. enclosure vol.          20 / 70 l     0,7 / 2,5 ft 3
Voice coil diameter                 77 mm         3 in
Bl factor                                  20,2 N/A
Moving mass                                0,071 kg
Voice coil length                          17,5 mm
Air gap height                                8 mm
X damage  (peak to peak)                    30 mm
THIELE-SMALL PARAMETERS**                                      MOUNTING INFORMATION
42 Hz          Overall diameter                312 mm      12,28 in
Resonant frequency, f s                                                                     294,5 mm      11,59 in
6,3 ?          Bolt circle diameter
D.C. Voice coil resistance, R e
3,8          Baffle cutout diameter:
Mechanical Quality Factor, Q ms                                                             277,5 mm      10,93 in
0,29           - Front mount
Electrical Quality Factor, Q es                                                              147 mm        5,79 in
0,27          Depth
Total Quality Factor, Q ts                                                                     3,9 kg        8,60 lb
84 l         Net weight
Equivalent Air Volume to C ms , V as                                                           4,5 kg        9,92 lb
204 µm / N          Shipping weight
Mechanical Compliance, C ms
4,9 kg / s
Mechanical Resistance, R ms
Efficiency, ? 0                                2 %
Effective Surface Area, S d                0,054 m 2
Maximum Displacement, X max  ***              7 mm
770 cm 3
Displacement Volume, V d
1 mH
Voice Coil Inductance, L e  @ Z min                           Notes:
*  The  power  capaticty  is  determined  according  to AES2-1984  (r2003)  standard.  Program
power is defined as the transducer’s ability to handle normal music program material.
** T-S parameters are measured after an exercise period using a preconditioning power test.
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).
*** The X max  is calculated as (L vc  - H ag )/2 + (H ag /3,5), where L vc  is the voice coil length and
H ag  is the air gap height.

12LW30/N
LOW FREQUENCY TRANSDUCER
www.beyma.com                                                                          LW30 Series
LOW & MID FREQUENCY TRANSDUCER
FREE AIR IMPEDANCE CURVE
[?]
[Hz]
FREQUENCY RESPONSE AND DISTORTION
[dB]
[Hz]
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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