Профессиональный сабвуферный динамик BEYMA SM-112 N. Инструкция на английском языке

SM112/N
SM112/N
S M   S e r i e s
KEY FEATURES
•   High power handling (400 w AES)
•   3” (77 mm) copper voice coil with apical former
•   Optimum winding length for increased linear
excursion
•   Extended response in the medium frequency range
•      Designed for high power woofer applications
GENERAL DESCRIPTION
The design concept of this low frequency transducer 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. The SM-112/N incorporates a 3” voice coil made with high quality materials: copper round wire
with high temperature bonding strength and apical former. Moreover, it features a powerful magnet system with rear air
ventilation. All these facts result in a 12” driver with extended and smooth low-mid frequency response, reduced harmonic
distortion, good efficiency and excellent power handling (400 w AES). The SM-112/N is specially recommended for woofer
applications.
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
5,0
4,0
dB  3,0
2,0
1,0
50    120    190   260    330   400
Power (W)
Note: Bass-reflex cabinet, Vb=70 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.

SM112/N
SM112/N
S M   S e r i e s
TECHNICAL SPECIFICATIONS                                      DIMENSION DRAWINGS
Nominal diameter                      300 mm. 12 in.
Rated impedance                             8 ohms.
Minimum impedance                         7.4 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.         30 / 100 l  1.06 / 3.53 ft. 3
Voice coil diameter                     77 mm. 3 in.
Magnetic assembly weight              4.9 kg. 10.8 lb.
BL factor                                 17.2 N / A
Moving mass                                0.052 kg.
Voice coil length                           18 mm.
Air gap height                               7 mm.
X damage (peak to peak)                     30 mm.
MATERIALS
MOUNTING INFORMATION
•   Voice coil: copper round wire with high temperature
Overall diameter                   312 mm.   12.3 in.             bonding strength. Apical former able to withstand
Bolt circle diameter             294.5 mm.    11.6 in.            high temperatures.
Baffle cutout diameter:                                       •   Cone: high stiffness paper cone.
- Front mount                    277.5 mm.   10.9 in.         •   Surround: specially treated cloth surround.
- Rear mount                       280 mm.      11 in.        •   Spider: cotton spider.
Depth                              138 mm.   5.43 in.         •   Metal parts: effective protection against corrosion.
Volume displaced by driver            4.5 l    0.16 ft. 3     •   Basket: specially designed die cast aluminium bas-
Net weight                         5.65 kg.  12.45 lb.            ket to avoid disturbing resonances.
Shipping weight                       6 kg.  13.23 lb.
•   Magnet: high Curie temperature ferrite.
THIELE-SMALL PARAMETERS **
Resonant frequency, fs                        38 Hz           Notes:
D.C. Voice coil resistance, Re            6.5 ohms.           *The power capacity is determined according to AES2-1984 (r2003) standard.
Mechanical Quality Factor, Qms                  7.2           Program power is defined as the transducer’s ability to handle normal music program material.
Electrical Quality Factor, Qes                 0.28           **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
Total Quality Factor, Qts                      0.27           term parameters (once the loudspeaker has been working for a short period of time).
Equivalent Air Volume to Cms, Vas              138 l
Mechanical Compliance, Cms               327 µµ µµ µm / N
Mechanical Resistance, Rms                 1.8 kg / s
Efficiency, ?? ?? ?o (%)                        2.6
Effective Surface Area, Sd (m )           0.0550 m 2
2
Maximum Displacement, Xmax                  5.5 mm.
Displacement Volume, Vd                     300 cm 3
Voice Coil Inductance, Le @ 1 kHz            1.1 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 ·