12″ / 325 mm
Nominal diameter
28 Hz
Resonance
0.21
Q factor
87 dB
Sensitivity
± 36 mm
Linear excursion
9000 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
27.7
Hz
Mechanical quality factor
QMS
3.75
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.21
Large signal parameters
Maximum linear excursion
xmax
36.0
mm
Air volume displaced at xmax
VD
1908
cm³
Power handling
P
4500
W
Program power
Pmax
9000
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
2.8
Ω
Inductance (1kHz, in series, estimated)
LE
1.4
mH
VC Diameter
102
mm
Winding material
Flat aluminum
Magnet
Force factor (in series)
Bl
27.7
N/A
Motor constant
Bl/√RE
16.6
N/√W
Diameter
256
mm
Height
78
mm
Diaphragm
Effective diameter
260
mm
Effective area
SD
530
cm²
Moving mass
MMS
352
g
Moving mass (without air load)
MMD
343
g
Suspensions
Stiffness
KMS
10.53
N/mm
Compliance
CMS
95
µm/N
Equivalent volume to the compliance
VAS
37.7
L
Mechanical resistance
RMS
16.34
N·s/m
Dimensions
Nominal diameter
12
″
325
mm
Overall diameter
325
mm
Baffle cutout diameter
307
mm
Mounting depth
260
mm
Volume occupied by the driver
6.0
L
Net weight
42.0
kg
Similar subwoofers to Pride M45.12 D2
12″Subwoofer
fS
27 Hz
SD
530 cm²
QTS
0.21
xmax
36.0 mm
SPL1W
87 dB
Bl/√RE
17
Pmax
9000 W
12″Subwoofer
fS
29 Hz
SD
530 cm²
QTS
0.24
xmax
35.0 mm
SPL1W
87 dB
Bl/√RE
15
Pmax
7000 W
12″Subwoofer
fS
28 Hz
SD
530 cm²
QTS
0.24
xmax
35.0 mm
SPL1W
87 dB
Bl/√RE
15
Pmax
7000 W