D.A.S. Audio 15B
Mid Bass
15″ / 381 mm
Nominal diameter
42 Hz
Resonance
0.24
Q factor
99 dB
Sensitivity
± 4 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
98.9
dB
Frequency response
40 - 5000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
42.0
Hz
Mechanical quality factor
QMS
6.39
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.24
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Maximum excursion before damage
xlim
10.0
mm
Air volume displaced at xmax
VD
344
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz, estimated)
LE
1.08
mH
VC Diameter
102
mm
Winding height
HVC
12
mm
Winding material
Aluminium
Former material
Glass Fibre Reinforced Polymer
Magnet
Force factor
Bl
21.3
N/A
Motor constant
Bl/√RE
9.0
N/√W
Air gap height
HAG
8
mm
Material
Ferrite
Diaphragm
Effective diameter
331
mm
Effective area
SD
860
cm²
Moving mass
MMS
75
g
Moving mass (without air load)
MMD
57.8
g
Suspensions
Stiffness
KMS
5.29
N/mm
Compliance
CMS
189
µm/N
Equivalent volume to the compliance
VAS
198
L
Mechanical resistance
RMS
3.1
N·s/m
Surround material
Polycotton
Spider material
Polycotton
Dimensions
Nominal diameter
15
″
381
mm
Baffle cutout diameter
359
mm
Volume occupied by the driver (estimated)
4.3
L
Frame material
Injected Aluminum
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15″Woofer
fS
48 Hz
SD
855 cm²
48 - 4000 Hz
QTS
0.23
xmax
4.0 mm
SPL1W
99 dB
Bl/√RE
9.06
Pmax
600 W