D.A.S. Audio 12B
Mid Bass
12″ / 305 mm
Nominal diameter
46 Hz
Resonance
0.19
Q factor
97 dB
Sensitivity
± 4 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
97.0
dB
Frequency response
50 - 5000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
46.0
Hz
Mechanical quality factor
QMS
8.72
Electrical quality factor
QES
0.19
Total quality factor
QTS
0.19
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Maximum excursion before damage
xlim
10.0
mm
Air volume displaced at xmax
VD
216
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz, estimated)
LE
1.0
mH
VC Diameter
102
mm
Winding height
HVC
12
mm
Winding material
Aluminium EFW
Former material
Glass Fibre Reinforced Polymer
Magnet
Force factor
Bl
23.5
N/A
Motor constant
Bl/√RE
9.84
N/√W
Air gap height
HAG
8
mm
Material
Ferrite
Diaphragm
Effective diameter
262
mm
Effective area
SD
540
cm²
Moving mass
MMS
65
g
Moving mass (without air load)
MMD
56.3
g
Suspensions
Stiffness
KMS
5.32
N/mm
Compliance
CMS
188
µm/N
Equivalent volume to the compliance
VAS
77.8
L
Mechanical resistance
RMS
2.15
N·s/m
Surround material
Polycotton
Spider material
Polycotton
Dimensions
Nominal diameter
12
″
305
mm
Baffle cutout diameter
289
mm
Volume occupied by the driver (estimated)
2.4
L
Frame material
Injected Aluminum
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fS
46 Hz
SD
515 cm²
50 - 2000 Hz
QTS
0.20
xmax
7.8 mm
SPL1W
97 dB
Bl/√RE
9.1
Pmax
1000 W
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fS
44 Hz
SD
515 cm²
50 - 2000 Hz
QTS
0.18
xmax
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SPL1W
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Bl/√RE
9.1
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fS
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SD
531 cm²
58 - 5000 Hz
QTS
0.19
xmax
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SPL1W
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Bl/√RE
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