12″ / 300 mm
Nominal diameter
24 Hz
Resonance
0.42
Q factor
85 dB
Sensitivity
± 17 mm
Linear excursion
1200 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
85.3
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
24.0
Hz
Mechanical quality factor
QMS
5.90
Electrical quality factor
QES
0.45
Total quality factor
QTS
0.42
Large signal parameters
Maximum linear excursion
xmax
17.0
mm
Maximum excursion before damage
xlim
27.0
mm
Air volume displaced at xmax
VD
891
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
7.6
Ω
Inductance (1kHz, in series)
LE
6.4
mH
VC Diameter
65
mm
Magnet
Force factor (in series)
Bl
24.0
N/A
Motor constant
Bl/√RE
8.71
N/√W
Diameter
165
mm
Height
35
mm
Diaphragm
Effective diameter
260
mm
Effective area
SD
524
cm²
Moving mass
MMS
235
g
Moving mass (without air load)
MMD
226.2
g
Material
Water-repellent pressed paper
Suspensions
Stiffness
KMS
5.26
N/mm
Compliance
CMS
190
µm/N
Equivalent volume to the compliance
VAS
74
L
Mechanical resistance
RMS
6.01
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
321
mm
Baffle cutout diameter
287
mm
Overall depth
187
mm
Flange thickness
23
mm
Mounting depth
164
mm
Volume occupied by the driver (estimated)
4.1
L
Net weight
8.63
kg
Similar subwoofers to Hertz MP 300 D4.3 PRO
15″Subwoofer
fS
23 Hz
SD
754 cm²
QTS
0.47
xmax
35.0 mm
SPL1W
84 dB
Bl/√RE
11
Pmax
8000 W
12″Subwoofer
fS
23 Hz
SD
531 cm²
QTS
0.48
xmax
16.0 mm
SPL1W
85 dB
Bl/√RE
7.7
Pmax
1200 W
13.5″Subwoofer
fS
26 Hz
SD
634 cm²
QTS
0.48
xmax
11.0 mm
SPL1W
86 dB
Bl/√RE
10
Pmax
1200 W