Radian 5215B
Coaxial
15″ / 380 mm
Nominal diameter
40 Hz
Resonance
0.26
Q factor
97 dB
Sensitivity
± 5.5 mm
Linear excursion
1250 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
97.1
dB
Frequency response
40 - 18000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
40.0
Hz
Mechanical quality factor
QMS
3.28
Electrical quality factor
QES
0.29
Total quality factor
QTS
0.26
Large signal parameters
Maximum linear excursion
xmax
5.5
mm
Air volume displaced at xmax
VD
484
cm³
Power handling
P
625
W
Program power
Pmax
1250
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
1.3
mH
VC Diameter
102
mm
Winding height
HVC
16.5
mm
Winding material
Copper Clad aluminum
Former material
Fiberglass
Magnet
Force factor
Bl
20.0
N/A
Motor constant
Bl/√RE
8.69
N/√W
Air gap height
HAG
10
mm
Material
Ferrite
Diaphragm
Effective diameter
335
mm
Effective area
SD
880
cm²
Moving mass
MMS
88
g
Moving mass (without air load)
MMD
70
g
Material
Paper/Kevlar composite
Suspensions
Stiffness
KMS
5.44
N/mm
Compliance
CMS
184
µm/N
Equivalent volume to the compliance
VAS
202
L
Mechanical resistance
RMS
6.74
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
388
mm
Baffle cutout diameter
356
mm
Overall depth
209
mm
Flange thickness
16
mm
Mounting depth
193
mm
Volume occupied by the driver (estimated)
6.7
L
Net weight
14.0
kg
Frame material
Cast Aluminum
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar speaker drivers to Radian 5215B
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18″Subwoofer
fS
36 Hz
SD
1134 cm²
40 - 3500 Hz
QTS
0.26
xmax
6.0 mm
SPL1W
97 dB
Bl/√RE
12
Pmax
1200 W
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15″Subwoofer
fS
39 Hz
SD
850 cm²
40 - 4300 Hz
QTS
0.29
xmax
8.0 mm
SPL1W
97 dB
Bl/√RE
8.52
Pmax
1200 W
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