4.5″ / 114 mm
Nominal diameter
58 Hz
Resonance
0.39
Q factor
84 dB
Sensitivity
± 4 mm
Linear excursion
80 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
83.7
dB
Frequency response
58 - 1200
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
58.0
Hz
Mechanical quality factor
QMS
8.40
Electrical quality factor
QES
0.41
Total quality factor
QTS
0.39
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
20
cm³
Power handling
P
40
W
Program power
Pmax
80
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.48
mH
VC Diameter
26
mm
Winding height
HVC
12
mm
Magnet
Force factor
Bl
4.7
N/A
Motor constant
Bl/√RE
2.63
N/√W
Air gap height
HAG
4
mm
Diaphragm
Effective diameter
79
mm
Effective area
SD
49
cm²
Moving mass
MMS
7.9
g
Moving mass (without air load)
MMD
7.6
g
Suspensions
Stiffness
KMS
1.03
N/mm
Compliance
CMS
970
µm/N
Equivalent volume to the compliance
VAS
3.3
L
Mechanical resistance
RMS
0.34
N·s/m
Dimensions
Nominal diameter
4.5
″
114
mm
Volume occupied by the driver (estimated)
0.31
L
Net weight
0.8
kg
Similar speaker drivers to Wavecor SW118WA01
4″Woofer
fS
55 Hz
SD
54 cm²
60 - 8000 Hz
QTS
0.38
xmax
4.1 mm
SPL1W
84 dB
Bl/√RE
2.44
Pmax
70 W
4.5″Woofer
fS
60 Hz
SD
50 cm²
60 - 3500 Hz
QTS
0.36
xmax
3.0 mm
SPL1W
85 dB
Bl/√RE
2.35
Pmax
200 W
4.75″Mid Bass
fS
57 Hz
SD
48 cm²
56 - 4000 Hz
QTS
0.38
xmax
3.0 mm
SPL1W
84 dB
Bl/√RE
2.42