Eighteen Sound 12ND830

Subwoofer

12″ / 300 mm
Nominal diameter
58 Hz
Resonance
0.24
Q factor
98 dB
Sensitivity
± 6.5 mm
Linear excursion
700 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
97.6
dB
Frequency response
53 - 5000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
58.0
Hz
Mechanical quality factor
QMS
6.48
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.24

Large signal parameters

Maximum linear excursion
xmax
6.5
mm
Air volume displaced at xmax
VD
345
cm³
Power handling
P
450
W
Program power
Pmax
700
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
2.8
Ω
Inductance (1kHz)
LE
0.96
mH
VC Diameter
75
mm

Magnet

Force factor
Bl
13.7
N/A
Motor constant
Bl/√RE
8.19
N/√W

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
47
g
Moving mass (without air load)
MMD
38.2
g

Suspensions

Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
63
L
Mechanical resistance
RMS
2.64
N·s/m

Dimensions

Nominal diameter
12
300
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
140
mm
Flange thickness
9
mm
Mounting depth
131
mm
Volume occupied by the driver (estimated)
2.1
L
Net weight
4.3
kg
Eighteen Sound 12ND830 Impedance
Eighteen Sound 12ND830 SPL
Eighteen Sound 12ND830 Dimensions

Export this driver to a simulation software:

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fS
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SD
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50 - 20000 Hz
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Pmax
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SD
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