Beyma 6NMFW
Subwoofer
6.5″ / 165 mm
Nominal diameter
40 Hz
Resonance
0.33
Q factor
85 dB
Sensitivity
± 9 mm
Linear excursion
400 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.3
dB
Frequency response
35 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
40.0
Hz
Mechanical quality factor
QMS
7.50
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
9.0
mm
Maximum excursion before damage
xlim
43.0
mm
Air volume displaced at xmax
VD
139
cm³
Power handling
P
200
W
Program power
Pmax
400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.8
Ω
Inductance (1kHz)
LE
0.95
mH
VC Diameter
51
mm
Winding height
HVC
20
mm
Magnet
Force factor
Bl
14.0
N/A
Motor constant
Bl/√RE
5.81
N/√W
Air gap height
HAG
6
mm
Diaphragm
Effective diameter
140
mm
Effective area
SD
154
cm²
Moving mass
MMS
45
g
Moving mass (without air load)
MMD
43.6
g
Suspensions
Stiffness
KMS
2.92
N/mm
Compliance
CMS
342
µm/N
Equivalent volume to the compliance
VAS
11
L
Mechanical resistance
RMS
1.52
N·s/m
Dimensions
Nominal diameter
6.5
″
165
mm
Overall diameter
176
mm
Baffle cutout diameter
158
mm
Overall depth
121
mm
Volume occupied by the driver (estimated)
1.2
L
Net weight
3.5
kg
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SpeakerbenchSimilar subwoofers to Beyma 6NMFW
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6.5″Woofer
fS
38 Hz
SD
129 cm²
38 - 7500 Hz
QTS
0.29
xmax
5.3 mm
SPL1W
86 dB
Bl/√RE
4.05
Pmax
140 W
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6.5″Woofer
fS
37 Hz
SD
129 cm²
40 - 4500 Hz
QTS
0.27
xmax
5.3 mm
SPL1W
86 dB
Bl/√RE
4.36
Pmax
140 W
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6.5″Subwoofer
fS
38 Hz
SD
140 cm²
38 - 800 Hz
QTS
0.40
xmax
13.0 mm
SPL1W
83 dB
Bl/√RE
4.57
Pmax
100 W