4.75″ / 121 mm
Nominal diameter
48 Hz
Resonance
0.4
Q factor
84 dB
Sensitivity
± 4 mm
Linear excursion
120 W
Program Power
.png)
.png)
Sensitivity (1w, 1m, infinite baffle)
SPL1W
83.9
dB
Frequency response
48 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
48.0
Hz
Mechanical quality factor
QMS
7.40
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.40
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
22
cm³
Power handling
P
60
W
Program power
Pmax
120
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.09
mH
VC Diameter
32
mm
Winding height
HVC
12
mm
Magnet
Force factor
Bl
4.1
N/A
Motor constant
Bl/√RE
2.29
N/√W
Air gap height
HAG
4
mm
Weight
0.37
kg
Diaphragm
Effective diameter
83
mm
Effective area
SD
54
cm²
Moving mass
MMS
7.3
g
Moving mass (without air load)
MMD
7
g
Suspensions
Stiffness
KMS
0.67
N/mm
Compliance
CMS
1500
µm/N
Equivalent volume to the compliance
VAS
6.2
L
Mechanical resistance
RMS
0.3
N·s/m
Dimensions
Nominal diameter
4.75
″
121
mm
Volume occupied by the driver (estimated)
0.4
L
Net weight
1.0
kg
.png)
.png)
Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar speaker drivers to Wavecor WF120BD05/09
.jpg.webp)
4″Mid-range
fS
50 Hz
SD
54 cm²
50 - 6000 Hz
QTS
0.44
xmax
4.0 mm
SPL1W
83 dB
Bl/√RE
2.08
Pmax
50 W
.png.webp)
.jpg.webp)