Beyma SM-112/N
Woofer
12″ / 300 mm
Nominal diameter
40 Hz
Resonance
0.3
Q factor
95 dB
Sensitivity
± 7.25 mm
Linear excursion
800 W
Program Power
Discontinued
Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.9
dB
Frequency response
40 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
40.0
Hz
Mechanical quality factor
QMS
8.00
Electrical quality factor
QES
0.31
Total quality factor
QTS
0.30
Large signal parameters
Maximum linear excursion
xmax
7.25
mm
Maximum excursion before damage
xlim
15.0
mm
Air volume displaced at xmax
VD
399
cm³
Power handling
P
400
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
1.2
mH
VC Diameter
77
mm
Winding height
HVC
17.5
mm
Magnet
Force factor
Bl
17.0
N/A
Motor constant
Bl/√RE
6.83
N/√W
Air gap height
HAG
7
mm
Material
Ferrite
Diaphragm
Effective diameter
265
mm
Effective area
SD
550
cm²
Moving mass
MMS
58
g
Moving mass (without air load)
MMD
49.3
g
Suspensions
Stiffness
KMS
3.66
N/mm
Compliance
CMS
273
µm/N
Equivalent volume to the compliance
VAS
117
L
Mechanical resistance
RMS
1.8
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Volume occupied by the driver (estimated)
2.5
L
Net weight
5.65
kg
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SpeakerbenchSimilar subwoofers to Beyma SM-112/N
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fS
40 Hz
SD
850 cm²
40 - 2200 Hz
QTS
0.30
xmax
10.0 mm
SPL1W
95 dB
Bl/√RE
10
Pmax
2400 W
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fS
41 Hz
SD
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35 - 2000 Hz
QTS
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SPL1W
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Pmax
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fS
40 Hz
SD
830 cm²
39 - 2000 Hz
QTS
0.31
xmax
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SPL1W
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Bl/√RE
11
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2400 W