Eighteen Sound 12NCX910

Coaxial

12″ / 300 mm
Nominal diameter
57 Hz
Resonance
0.3
Q factor
97 dB
Sensitivity
± 6.9 mm
Linear excursion
900 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
96.8
dB
Frequency response
60 - 4000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
57.0
Hz
Mechanical quality factor
QMS
10.00
Electrical quality factor
QES
0.31
Total quality factor
QTS
0.30

Large signal parameters

Maximum linear excursion
xmax
6.9
mm
Air volume displaced at xmax
VD
366
cm³
Power handling
P
450
W
Program power
Pmax
900
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
0.78
mH
VC Diameter
75
mm
Winding material
CCAW Aluminum

Magnet

Force factor
Bl
18.1
N/A
Motor constant
Bl/√RE
7.86
N/√W
Material
Neodymium

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
53
g
Moving mass (without air load)
MMD
44.4
g

Suspensions

Stiffness
KMS
6.8
N/mm
Compliance
CMS
147
µm/N
Equivalent volume to the compliance
VAS
58
L
Mechanical resistance
RMS
1.9
N·s/m

Dimensions

Nominal diameter
12
300
mm
Overall diameter
310
mm
Baffle cutout diameter
283
mm
Overall depth
210
mm
Flange thickness
13
mm
Mounting depth
197
mm
Volume occupied by the driver (estimated)
3.4
L
Net weight
6.0
kg
Eighteen Sound 12NCX910 Impedance
Eighteen Sound 12NCX910 SPL
Eighteen Sound 12NCX910 Dimensions

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Similar speaker drivers to Eighteen Sound 12NCX910

PRV Audio 12MR2000 Mid-range
12Mid-range
fS
57 Hz
SD
573 cm²
60 - 5000 Hz
QTS
0.33
xmax
6.6 mm
SPL1W
96 dB
Bl/√RE
8.47
Pmax
2000 W