Celestion TN1230
Low frequency
12″ / 305 mm
Nominal diameter
47 Hz
Resonance
0.35
Q factor
94 dB
Sensitivity
± 3.75 mm
Linear excursion
700 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.7
dB
Frequency response
50 - 4500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
46.6
Hz
Mechanical quality factor
QMS
4.76
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.35
Large signal parameters
Maximum linear excursion
xmax
3.75
mm
Air volume displaced at xmax
VD
199
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.1
Ω
Inductance (1kHz)
LE
0.99
mH
VC Diameter
75
mm
Winding height
HVC
17.5
mm
Winding material
Round copper
Former material
Polyimide
Magnet
Force factor
Bl
18.55
N/A
Motor constant
Bl/√RE
7.52
N/√W
Air gap height
HAG
10
mm
Material
Neodymium
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
72.4
g
Moving mass (without air load)
MMD
63.8
g
Material
Kevlar loaded paper
Suspensions
Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
64.3
L
Mechanical resistance
RMS
4.45
N·s/m
Surround material
Cloth-sealed
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
309
mm
Baffle cutout diameter
283
mm
Overall depth
132
mm
Volume occupied by the driver (estimated)
1.3
L
Net weight
2.1
kg
Frame material
Pressed steel
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12″Subwoofer
fS
48 Hz
SD
515 cm²
40 - 2000 Hz
QTS
0.35
xmax
10.5 mm
SPL1W
94 dB
Bl/√RE
7.52
Pmax
900 W
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12″Woofer
fS
46 Hz
SD
545 cm²
63 - 2100 Hz
QTS
0.32
xmax
5.0 mm
SPL1W
95 dB
Bl/√RE
8.05
Pmax
1600 W
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12″Woofer
fS
50 Hz
SD
522 cm²
50 - 3000 Hz
QTS
0.37
xmax
8.0 mm
SPL1W
94 dB
Bl/√RE
7.59
Pmax
1400 W