12″ / 306 mm
Nominal diameter
83 Hz
Resonance
1.04
Q factor
95 dB
Sensitivity
± 1.5 mm
Linear excursion
140 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.4
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
83.0
Hz
Mechanical quality factor
QMS
7.84
Electrical quality factor
QES
1.20
Total quality factor
QTS
1.04
Large signal parameters
Maximum linear excursion
xmax
1.5
mm
Air volume displaced at xmax
VD
74
cm³
Power handling
P
70
W
Program power
Pmax
140
W
Voice Coil
Nominal impedance
Z
16
Ω
DC resistance
RE
12.0
Ω
Inductance (1kHz)
LE
1.0
mH
VC Diameter
38
mm
Winding material
Copper
Former material
Epotex
Magnet
Flux density
B
1.16
T
Force factor
Bl
12.56
N/A
Motor constant
Bl/√RE
3.63
N/√W
Weight
0.64
kg
Material
Ferrite
Diaphragm
Effective diameter
250
mm
Effective area
SD
491
cm²
Moving mass
MMS
30.3
g
Moving mass (without air load)
MMD
22.5
g
Material
Paper
Suspensions
Stiffness
KMS
8.0
N/mm
Compliance
CMS
125
µm/N
Equivalent volume to the compliance
VAS
42.4
L
Mechanical resistance
RMS
2.02
N·s/m
Surround material
Integrated Paper
Dimensions
Nominal diameter
12
″
306
mm
Overall diameter
306
mm
Volume occupied by the driver (estimated)
1.0
L
Net weight
2.4
kg
Frame material
Pressed Sheet
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar speaker drivers to Jensen Mod 12-70
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