RCF MB8N251

Woofer

8″ / 203 mm
Nominal diameter
68 Hz
Resonance
0.25
Q factor
93 dB
Sensitivity
± 5 mm
Linear excursion
600 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
92.9
dB
Frequency response
60 - 3500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
68.0
Hz
Mechanical quality factor
QMS
4.60
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.25

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Maximum excursion before damage
xlim
20.0
mm
Air volume displaced at xmax
VD
100
cm³
Power handling
P
300
W
Program power
Pmax
600
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
1.3
mH
VC Diameter
63
mm
Winding height
HVC
14
mm
Winding material
Aluminium
Former material
Glass Fiber

Magnet

Force factor
Bl
15.2
N/A
Motor constant
Bl/√RE
6.73
N/√W
Air gap height
HAG
9
mm

Diaphragm

Effective diameter
165
mm
Effective area
SD
200
cm²
Moving mass
MMS
27
g
Moving mass (without air load)
MMD
24.9
g

Suspensions

Stiffness
KMS
5.03
N/mm
Compliance
CMS
199
µm/N
Equivalent volume to the compliance
VAS
13
L
Mechanical resistance
RMS
2.51
N·s/m

Dimensions

Nominal diameter
8
203
mm
Overall diameter
208
mm
Baffle cutout diameter
185
mm
Overall depth
102
mm
Volume occupied by the driver
0.6
L
Net weight
2.01
kg
RCF MB8N251 Impedance
RCF MB8N251 SPL
RCF MB8N251 Dimensions

Export this driver to a simulation software:

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