Beyma SM-108
Mid Bass
8″ / 200 mm
Nominal diameter
71 Hz
Resonance
0.32
Q factor
93 dB
Sensitivity
± 6 mm
Linear excursion
300 W
Program Power
Discontinued
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.2
dB
Frequency response
70 - 6000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
71.0
Hz
Mechanical quality factor
QMS
3.80
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Maximum excursion before damage
xlim
11.0
mm
Air volume displaced at xmax
VD
132
cm³
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
0.9
mH
VC Diameter
52
mm
Winding height
HVC
15
mm
Magnet
Force factor
Bl
14.0
N/A
Motor constant
Bl/√RE
5.62
N/√W
Air gap height
HAG
7
mm
Material
Ferrite
Diaphragm
Effective diameter
167
mm
Effective area
SD
220
cm²
Moving mass
MMS
24
g
Moving mass (without air load)
MMD
21.7
g
Suspensions
Stiffness
KMS
4.76
N/mm
Compliance
CMS
210
µm/N
Equivalent volume to the compliance
VAS
14.4
L
Mechanical resistance
RMS
2.8
N·s/m
Dimensions
Nominal diameter
8
″
200
mm
Overall depth
94
mm
Volume occupied by the driver (estimated)
0.84
L
Net weight
3.1
kg
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SpeakerbenchSimilar woofers to Beyma SM-108
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8″Mid-range
fS
68 Hz
SD
200 cm²
65 - 3000 Hz
QTS
0.31
xmax
7.0 mm
SPL1W
93 dB
Bl/√RE
5.21
Pmax
400 W
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8″Bass Guitar Speaker
fS
75 Hz
SD
214 cm²
QTS
0.33
xmax
3.1 mm
SPL1W
93 dB
Bl/√RE
5.39
Pmax
300 W
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8″Coaxial
fS
70 Hz
SD
223 cm²
70 - 20000 Hz
QTS
0.29
xmax
6.2 mm
SPL1W
94 dB
Bl/√RE
5.88
Pmax
500 W