Peerless SDF-300F75PR03-04
Subwoofer
12″ / 305 mm
Nominal diameter
27 Hz
Resonance
0.36
Q factor
86 dB
Sensitivity
± 25.2 mm
Linear excursion
400 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.9
dB
Frequency response
40 - 400
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
27.0
Hz
Mechanical quality factor
QMS
9.71
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.36
Large signal parameters
Maximum linear excursion
xmax
25.2
mm
Air volume displaced at xmax
VD
1237
cm³
Power handling
P
200
W
Program power
Pmax
400
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.9
Ω
Inductance (1kHz)
LE
1.14
mH
VC Diameter
76
mm
Magnet
Force factor
Bl
18.7
N/A
Motor constant
Bl/√RE
11.0
N/√W
Air gap height
HAG
10
mm
Material
Ferrite
Diaphragm
Effective diameter
250
mm
Effective area
SD
491
cm²
Moving mass
MMS
255
g
Moving mass (without air load)
MMD
247.2
g
Material
Paper
Suspensions
Stiffness
KMS
7.69
N/mm
Compliance
CMS
130
µm/N
Equivalent volume to the compliance
VAS
45.5
L
Mechanical resistance
RMS
4.46
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
12
″
305
mm
Volume occupied by the driver (estimated)
7.6
L
Net weight
16.3
kg
Frame material
Cast Aluminium
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SD
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