BMS 12N804

Subwoofer

12″ / 318 mm
Nominal diameter
39 Hz
Resonance
0.29
Q factor
93 dB
Sensitivity
± 8 mm
Linear excursion
2200 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
93.0
dB
Frequency response
40 - 1700
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
39.0
Hz
Mechanical quality factor
QMS
4.60
Electrical quality factor
QES
0.31
Total quality factor
QTS
0.29

Large signal parameters

Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
425
cm³
Power handling
P
1100
W
Program power
Pmax
2200
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
0.66
mH
VC Diameter
102
mm
Winding height
HVC
26
mm
Winding material
Copper

Magnet

Force factor
Bl
20.4
N/A
Motor constant
Bl/√RE
8.54
N/√W
Air gap height
HAG
10
mm
Material
Neodymium

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
92
g
Moving mass (without air load)
MMD
83.2
g

Suspensions

Stiffness
KMS
5.56
N/mm
Compliance
CMS
180
µm/N
Equivalent volume to the compliance
VAS
71
L
Mechanical resistance
RMS
4.9
N·s/m

Dimensions

Nominal diameter
12
318
mm
Overall diameter
318
mm
Baffle cutout diameter
283
mm
Overall depth
151
mm
Volume occupied by the driver (estimated)
2.5
L
Net weight
5.1
kg
Frame material
Cast Aluminum
BMS 12N804 Impedance
BMS 12N804 SPL & Distortion
BMS 12N804 Dimensions

Export this driver to a simulation software:

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fS
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SD
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35 - 1000 Hz
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SD
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