12″ / 300 mm
Nominal diameter
23 Hz
Resonance
0.42
Q factor
84 dB
Sensitivity
± 16.8 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
84.3
dB
Frequency response
25 - 400
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
23.0
Hz
Mechanical quality factor
QMS
6.30
Electrical quality factor
QES
0.45
Total quality factor
QTS
0.42
Large signal parameters
Maximum linear excursion
xmax
16.8
mm
Maximum excursion before damage
xlim
20.0
mm
Air volume displaced at xmax
VD
908
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz)
LE
3.75
mH
VC Diameter
38
mm
Magnet
Force factor
Bl
18.7
N/A
Motor constant
Bl/√RE
10.1
N/√W
Diameter
156
mm
Height
36
mm
Material
Ferrite
Diaphragm
Effective diameter
263
mm
Effective area
SD
540
cm²
Moving mass
MMS
320
g
Moving mass (without air load)
MMD
311
g
Material
Polypropylene
Suspensions
Stiffness
KMS
6.67
N/mm
Compliance
CMS
150
µm/N
Equivalent volume to the compliance
VAS
62.1
L
Mechanical resistance
RMS
7.34
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
318
mm
Baffle cutout diameter
283
mm
Overall depth
109
mm
Flange thickness
21
mm
Mounting depth
88
mm
Volume occupied by the driver (estimated)
2.4
L
Net weight
6.64
kg
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Export this driver to a simulation software:
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MfbLabs
SpeakerbenchSimilar subwoofers to Hertz MPS 300 S4
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Hertz MP 300 D4.3 PRO2 x 4 Ω
12″Subwoofer
fS
24 Hz
SD
524 cm²
QTS
0.42
xmax
17.0 mm
SPL1W
85 dB
Bl/√RE
8.71
Pmax
1200 W
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12″Subwoofer
fS
19 Hz
SD
458 cm²
QTS
0.33
xmax
15.0 mm
SPL1W
84 dB
Bl/√RE
9.62
Pmax
600 W