4.5″ / 114 mm
Nominal diameter
58 Hz
Resonance
0.42
Q factor
85 dB
Sensitivity
± 4 mm
Linear excursion
100 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
84.9
dB
Frequency response
58 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
58.0
Hz
Mechanical quality factor
QMS
7.60
Electrical quality factor
QES
0.45
Total quality factor
QTS
0.42
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
22
cm³
Power handling
P
50
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.4
Ω
Inductance (1kHz)
LE
0.36
mH
VC Diameter
26
mm
Winding height
HVC
12
mm
Magnet
Force factor
Bl
5.8
N/A
Motor constant
Bl/√RE
2.29
N/√W
Air gap height
HAG
4
mm
Diaphragm
Effective diameter
83
mm
Effective area
SD
54
cm²
Moving mass
MMS
6.5
g
Moving mass (without air load)
MMD
6.2
g
Suspensions
Stiffness
KMS
0.85
N/mm
Compliance
CMS
1180
µm/N
Equivalent volume to the compliance
VAS
4.9
L
Mechanical resistance
RMS
0.31
N·s/m
Dimensions
Nominal diameter
4.5
″
114
mm
Volume occupied by the driver (estimated)
0.19
L
Similar speaker drivers to Wavecor WF118WA08
4″Mid Bass
fS
58 Hz
SD
50 cm²
QTS
0.43
xmax
5.0 mm
SPL1W
85 dB
Bl/√RE
1.99
Pmax
60 W
4″Mid Bass
fS
57 Hz
SD
50 cm²
QTS
0.37
xmax
5.0 mm
SPL1W
86 dB
Bl/√RE
2.13
Pmax
60 W
4″Mid-range
fS
58 Hz
SD
50 cm²
QTS
0.37
xmax
2.3 mm
SPL1W
86 dB
Bl/√RE
2.07
Pmax
100 W