RCF LF12P903

Subwoofer

12″ / 305 mm
Nominal diameter
47 Hz
Resonance
0.23
Q factor
96 dB
Sensitivity
± 7 mm
Linear excursion
1000 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
95.7
dB
Frequency response
40 - 2000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
47.0
Hz
Mechanical quality factor
QMS
4.20
Electrical quality factor
QES
0.24
Total quality factor
QTS
0.23

Large signal parameters

Maximum linear excursion
xmax
7.0
mm
Maximum excursion before damage
xlim
18.0
mm
Air volume displaced at xmax
VD
371
cm³
Power handling
P
500
W
Program power
Pmax
1000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
1.06
mH
VC Diameter
76
mm
Winding height
HVC
19
mm
Winding material
Copper
Former material
Glass Fiber

Magnet

Force factor
Bl
22.13
N/A
Motor constant
Bl/√RE
9.24
N/√W
Air gap height
HAG
10
mm

Diaphragm

Effective diameter
260
mm
Effective area
SD
530
cm²
Moving mass
MMS
70
g
Moving mass (without air load)
MMD
61.1
g

Suspensions

Stiffness
KMS
6.06
N/mm
Compliance
CMS
165
µm/N
Equivalent volume to the compliance
VAS
65
L
Mechanical resistance
RMS
4.92
N·s/m

Dimensions

Nominal diameter
12
305
mm
Overall diameter
320
mm
Baffle cutout diameter
284
mm
Volume occupied by the driver
2.6
L
Net weight
7.0
kg
RCF LF12P903 Impedance
RCF LF12P903 SPL

Export this driver to a simulation software:

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