Eighteen Sound 12MB777

Woofer

12″ / 300 mm
Nominal diameter
49 Hz
Resonance
0.19
Q factor
99 dB
Sensitivity
± 4.5 mm
Linear excursion
600 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
98.7
dB
Frequency response
60 - 5000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
49.0
Hz
Mechanical quality factor
QMS
4.70
Electrical quality factor
QES
0.20
Total quality factor
QTS
0.19

Large signal parameters

Maximum linear excursion
xmax
4.5
mm
Air volume displaced at xmax
VD
239
cm³
Power handling
P
450
W
Program power
Pmax
600
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
0.9
mH
VC Diameter
75
mm
Winding material
Aluminum

Magnet

Force factor
Bl
17.8
N/A
Motor constant
Bl/√RE
7.96
N/√W
Material
Ferrite

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
41
g
Moving mass (without air load)
MMD
32.2
g
Material
Weather protected

Suspensions

Stiffness
KMS
3.89
N/mm
Compliance
CMS
257
µm/N
Equivalent volume to the compliance
VAS
101
L
Mechanical resistance
RMS
2.69
N·s/m

Dimensions

Nominal diameter
12
300
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
147
mm
Flange thickness
16
mm
Mounting depth
131
mm
Volume occupied by the driver (estimated)
3.3
L
Net weight
8.0
kg
Eighteen Sound 12MB777 Impedance
Eighteen Sound 12MB777 SPL
Eighteen Sound 12MB777 Dimensions

Export this driver to a simulation software:

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Similar woofers to Eighteen Sound 12MB777

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12Mid Bass
fS
51 Hz
SD
522 cm²
50 - 4000 Hz
QTS
0.18
xmax
2.8 mm
SPL1W
99 dB
Bl/√RE
7.93
Pmax
500 W