Eighteen Sound 12MB650

Subwoofer

12″ / 300 mm
Nominal diameter
48 Hz
Resonance
0.23
Q factor
98 dB
Sensitivity
± 5.5 mm
Linear excursion
800 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
97.5
dB
Frequency response
45 - 5000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
48.0
Hz
Mechanical quality factor
QMS
3.20
Electrical quality factor
QES
0.24
Total quality factor
QTS
0.23

Large signal parameters

Maximum linear excursion
xmax
5.5
mm
Air volume displaced at xmax
VD
292
cm³
Power handling
P
400
W
Program power
Pmax
800
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
0.83
mH
VC Diameter
65
mm
Winding material
Aluminum

Magnet

Force factor
Bl
19.0
N/A
Motor constant
Bl/√RE
7.76
N/√W
Material
Ferrite

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
48
g
Moving mass (without air load)
MMD
39.4
g
Material
Weather protected

Suspensions

Stiffness
KMS
4.37
N/mm
Compliance
CMS
229
µm/N
Equivalent volume to the compliance
VAS
90
L
Mechanical resistance
RMS
4.52
N·s/m

Dimensions

Nominal diameter
12
300
mm
Overall diameter
310
mm
Baffle cutout diameter
280
mm
Overall depth
143
mm
Flange thickness
14
mm
Mounting depth
129
mm
Volume occupied by the driver (estimated)
2.9
L
Net weight
6.8
kg
Eighteen Sound 12MB650 Impedance
Eighteen Sound 12MB650 SPL
Eighteen Sound 12MB650 Dimensions

Export this driver to a simulation software:

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SD
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