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www.beyma.com
THIELE-SMALL PARAMETERS 3
Notes:
1 The power capaticty is determined according to AES2-1984 (r2003) standard.
2 Program power is defined as power capacity + 3 dB.
3 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).
4 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.
TECHNICAL SPECIFICATIONS
Nominal diameterRated impedanceMinimum impedancePower capacity 1
Program power 2
SensitivityFrequency rangeRecom. enclosure vol.Voice coil diameterBl factorMoving massVoice coil lengthAir gap heightXdamage (peak to peak)
300 mm 12 in8 Ω
6,5 Ω350 WAES
700 W97 dB 1W / 1m @ ZN
45 - 4.000 Hz30 / 100 l 1,1 / 3,5 ft3
63,5 mm 2,5 in14,4 N/A0,057 kg19,5 mm
7 mm27 mm
Resonant frequency, fsD.C. Voice coil resistance, ReMechanical Quality Factor, QmsElectrical Quality Factor, QesTotal Quality Factor, QtsEquivalent Air Volume to Cms, VasMechanical Compliance, CmsMechanical Resistance, RmsEfficiency, η0 Effective Surface Area, Sd Maximum Displacement, Xmax 4
Displacement Volume, VdVoice Coil Inductance, Le
43 Hz5,5 Ω
5,30,410,38103 l
240 µm / N2,9 kg / s
1,9 %0,055 m2
8,25 mm453 cm3
0,6 mH
SM-212LOW FREQUENCY TRANSDUCER
High power handling 350 WAES
High sensitivity: 97 dB (1W / 1m) 2,5” copper voice coil Lightweight curvilinear cone
KEY FEATURES
Acústica Beyma SL - P.I. Moncada II, C/ Pont Sec, 1C - 46113 Moncada, Valencia (Spain) - Tel. +34 96 130 13 75 - [email protected]
Extended controlled displacement: Xmax ± 8,25 mm 27 mm peak-to-peak excursion before damage Designed for low and mid frequencies reproduction
SM Series
www.beyma.com
SM-212LOW FREQUENCY TRANSDUCER
Overall diameter
Bolt circle diameter
Baffle cutout diameter:
- Front mount
Depth
Volume displaced by driver
Net weight
Shipping weight
312 mm 12,3 in
294,5 mm 11,6 in
278 mm 10,9 in
132 mm 5,2 in
4 l 0,14 ft3
4,6 kg 10,1 lb
5,3 kg 11,7 lb
12/1
4
DIMENSION DRAWING
Acústica Beyma SL - P.I. Moncada II, C/ Pont Sec, 1C - 46113 Moncada, Valencia (Spain) - Tel. +34 96 130 13 75 - [email protected]
[Ω]
[Hz]
[dB]
MOUNTING INFORMATION
Note: Frequency response measured with loudspeaker standing on infinite baffle in anechoic chamber, 1W @ 1m
SM Series
