RCF MB12N405

Woofer

12″ / 305 mm
Nominal diameter
52 Hz
Resonance
0.2
Q factor
96 dB
Sensitivity
± 7 mm
Linear excursion
2000 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

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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
96.0
dB
Frequency response
50 - 2000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
52.0
Hz
Mechanical quality factor
QMS
6.00
Electrical quality factor
QES
0.21
Total quality factor
QTS
0.20

Large signal parameters

Maximum linear excursion
xmax
7.0
mm
Maximum excursion before damage
xlim
26.5
mm
Air volume displaced at xmax
VD
350
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
1.2
mH
VC Diameter
102
mm
Winding height
HVC
20
mm
Winding material
Aluminium
Former material
Glass Fiber

Magnet

Force factor
Bl
23.5
N/A
Motor constant
Bl/√RE
10.5
N/√W
Air gap height
HAG
12
mm

Diaphragm

Effective diameter
260
mm
Effective area
SD
500
cm²
Moving mass
MMS
73
g
Moving mass (without air load)
MMD
64.7
g

Suspensions

Stiffness
KMS
7.58
N/mm
Compliance
CMS
132
µm/N
Equivalent volume to the compliance
VAS
53
L
Mechanical resistance
RMS
3.98
N·s/m

Dimensions

Nominal diameter
12
305
mm
Overall diameter
320
mm
Baffle cutout diameter
284
mm
Overall depth
133
mm
Volume occupied by the driver
2.9
L
Net weight
7.7
kg
RCF MB12N405 Impedance
RCF MB12N405 SPL
RCF MB12N405 Dimensions

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fS
40 Hz
SD
522 cm²
40 - 2000 Hz
QTS
0.16
xmax
8.0 mm
SPL1W
96 dB
Bl/√RE
11
Pmax
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