BMS 8N515
Woofer
8″ / 205 mm
Nominal diameter
88 Hz
Resonance
0.3
Q factor
96 dB
Sensitivity
± 4 mm
Linear excursion
400 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.5
dB
Frequency response
80 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
87.7
Hz
Mechanical quality factor
QMS
4.34
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.30
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
89
cm³
Power handling
P
200
W
Program power
Pmax
400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
0.32
mH
VC Diameter
52
mm
Winding height
HVC
15
mm
Winding material
Copper
Magnet
Force factor
Bl
13.8
N/A
Motor constant
Bl/√RE
5.94
N/√W
Air gap height
HAG
7
mm
Material
Neodymium
Diaphragm
Effective diameter
168
mm
Effective area
SD
222
cm²
Moving mass
MMS
20.6
g
Moving mass (without air load)
MMD
18.2
g
Suspensions
Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
11
L
Mechanical resistance
RMS
2.62
N·s/m
Dimensions
Nominal diameter
8
″
205
mm
Overall diameter
205
mm
Baffle cutout diameter
182
mm
Overall depth
102
mm
Volume occupied by the driver (estimated)
0.8
L
Net weight
1.98
kg
Frame material
Cast Aluminum
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8″Coaxial
fS
100 Hz
SD
220 cm²
100 - 20000 Hz
QTS
0.34
xmax
6.0 mm
SPL1W
96 dB
Bl/√RE
5.92
Pmax
500 W