12″ / 300 mm
Nominal diameter
25 Hz
Resonance
0.47
Q factor
87 dB
Sensitivity
± 12.5 mm
Linear excursion
700 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.7
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
25.0
Hz
Mechanical quality factor
QMS
7.20
Electrical quality factor
QES
0.50
Total quality factor
QTS
0.47
Large signal parameters
Maximum linear excursion
xmax
12.5
mm
Maximum excursion before damage
xlim
16.5
mm
Air volume displaced at xmax
VD
700
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
3.64
mH
VC Diameter
35
mm
Magnet
Force factor
Bl
14.8
N/A
Motor constant
Bl/√RE
7.8
N/√W
Diameter
134
mm
Height
34
mm
Material
Ferrite
Diaphragm
Effective diameter
268
mm
Effective area
SD
560
cm²
Moving mass
MMS
193
g
Moving mass (without air load)
MMD
183.7
g
Material
Polypropylene
Suspensions
Stiffness
KMS
4.76
N/mm
Compliance
CMS
210
µm/N
Equivalent volume to the compliance
VAS
93.4
L
Mechanical resistance
RMS
4.21
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
318
mm
Baffle cutout diameter
281
mm
Overall depth
147
mm
Flange thickness
17
mm
Mounting depth
130
mm
Volume occupied by the driver (estimated)
2.4
L
Net weight
4.844
kg
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Export this driver to a simulation software:
WinISD
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Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to Hertz CS 300 S4
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Rockford Fosgate P2D2-122 x 2 Ω
12″Subwoofer
fS
26 Hz
SD
570 cm²
QTS
0.52
xmax
13.3 mm
SPL1W
86 dB
Bl/√RE
7.87
Pmax
800 W
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Rockford Fosgate P2D4-122 x 4 Ω
12″Subwoofer
fS
27 Hz
SD
570 cm²
QTS
0.54
xmax
13.3 mm
SPL1W
87 dB
Bl/√RE
7.47
Pmax
800 W