RCF CX15N351
Coaxial
15″ / 381 mm
Nominal diameter
55 Hz
Resonance
0.26
Q factor
99 dB
Sensitivity
± 6 mm
Linear excursion
900 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
99.0
dB
Frequency response
40 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
55.0
Hz
Mechanical quality factor
QMS
6.00
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.26
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Maximum excursion before damage
xlim
19.5
mm
Air volume displaced at xmax
VD
540
cm³
Power handling
P
450
W
Program power
Pmax
900
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
1.65
mH
VC Diameter
89
mm
Winding height
HVC
17
mm
Winding material
Copper
Magnet
Force factor
Bl
23.5
N/A
Motor constant
Bl/√RE
9.93
N/√W
Air gap height
HAG
11
mm
Diaphragm
Effective diameter
330
mm
Effective area
SD
900
cm²
Moving mass
MMS
80
g
Moving mass (without air load)
MMD
61.4
g
Suspensions
Stiffness
KMS
9.17
N/mm
Compliance
CMS
109
µm/N
Equivalent volume to the compliance
VAS
110
L
Mechanical resistance
RMS
4.61
N·s/m
Spider material
with silicon damping
Dimensions
Nominal diameter
15
″
381
mm
Overall diameter
393
mm
Baffle cutout diameter
354
mm
Overall depth
254
mm
Volume occupied by the driver
3.8
L
Net weight
7.0
kg
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15″Coaxial
fS
53 Hz
SD
881 cm²
44 - 3600 Hz
QTS
0.31
xmax
7.5 mm
SPL1W
98 dB
Bl/√RE
11
Pmax
1200 W