15″ / 381 mm
Nominal diameter
48 Hz
Resonance
0.75
Q factor
93 dB
Sensitivity
± 4.25 mm
Linear excursion
600 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Available on (affiliate links)
Amazon.com
$$$
Parts Express
$$$
Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.1
dB
Frequency response
42 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
48.1
Hz
Mechanical quality factor
QMS
2.99
Electrical quality factor
QES
1.00
Total quality factor
QTS
0.75
Large signal parameters
Maximum linear excursion
xmax
4.25
mm
Air volume displaced at xmax
VD
364
cm³
Power handling
P
300
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.45
mH
VC Diameter
64
mm
Winding height
HVC
16.5
mm
Magnet
Force factor
Bl
8.83
N/A
Motor constant
Bl/√RE
4.98
N/√W
Air gap height
HAG
8
mm
Height
46
mm
Diaphragm
Effective diameter
330
mm
Effective area
SD
855
cm²
Moving mass
MMS
83.4
g
Moving mass (without air load)
MMD
66.1
g
Material
Kevlar loaded paper
Suspensions
Stiffness
KMS
7.52
N/mm
Compliance
CMS
133
µm/N
Equivalent volume to the compliance
VAS
138
L
Mechanical resistance
RMS
8.327
N·s/m
Surround material
Cloth-sealed
Dimensions
Nominal diameter
15
″
381
mm
Overall diameter
385
mm
Baffle cutout diameter
351
mm
Overall depth
162
mm
Volume occupied by the driver (estimated)
2.9
L
Net weight
4.8
kg
Similar speaker drivers to Celestion BL15-300X (4)
12″Mid Bass
fS
49 Hz
SD
520 cm²
51 - 4300 Hz
QTS
0.77
xmax
2.4 mm
SPL1W
93 dB
Bl/√RE
3.39
Pmax
300 W
18″Low frequency
fS
46 Hz
SD
1225 cm²
40 - 1000 Hz
QTS
0.68
xmax
6.8 mm
SPL1W
94 dB
Bl/√RE
8.54
Pmax
2400 W
15″Subwoofer
fS
42 Hz
SD
847 cm²
40 - 4000 Hz
QTS
0.62
xmax
9.0 mm
SPL1W
94 dB
Bl/√RE
6.59
Pmax
1200 W