Eighteen Sound 12NTLW3500

4Ω
8Ω16Ω

Subwoofer

12″ / 300 mm
Nominal diameter
54 Hz
Resonance
0.33
Q factor
95 dB
Sensitivity
± 8.3 mm
Linear excursion
1800 W
Program Power
Eighteen Sound 12NTLW3500 SubwooferEighteen Sound 12NTLW3500 Subwoofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
94.6
dB
Frequency response
50 - 3000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
54.0
Hz
Mechanical quality factor
QMS
13.10
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.33

Large signal parameters

Maximum linear excursion
xmax
8.3
mm
Air volume displaced at xmax
VD
441
cm³
Power handling
P
900
W
Program power
Pmax
1800
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.29
mH
VC Diameter
88
mm
Winding material
Aluminum

Magnet

Force factor
Bl
16.3
N/A
Motor constant
Bl/√RE
9.26
N/√W
Material
Neodymium

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
85
g
Moving mass (without air load)
MMD
76.4
g

Suspensions

Stiffness
KMS
9.8
N/mm
Compliance
CMS
102
µm/N
Equivalent volume to the compliance
VAS
41
L
Mechanical resistance
RMS
2.2
N·s/m

Dimensions

Nominal diameter
12
″
300
mm
Overall diameter
310
mm
Baffle cutout diameter
282
mm
Overall depth
193
mm
Flange thickness
13
mm
Mounting depth
180
mm
Volume occupied by the driver (estimated)
2.7
L
Net weight
4.7
kg
Impedance
SPL
Eighteen Sound 12NTLW3500 Impedance
Eighteen Sound 12NTLW3500 SPL
Eighteen Sound 12NTLW3500 Dimensions
DatasheetDatasheet

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