Aurum Cantus AC120/50CK
Woofer
4.5″ / 120 mm
Nominal diameter
43 Hz
Resonance
0.18
Q factor
88 dB
Sensitivity
± 6 mm
Linear excursion
300 W
Program Power
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Parts Express
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.3
dB
Frequency response
43 - 7000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
43.0
Hz
Mechanical quality factor
QMS
3.40
Electrical quality factor
QES
0.19
Total quality factor
QTS
0.18
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
49
cm³
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.0
Ω
Inductance (1kHz)
LE
0.67
mH
VC Diameter
50
mm
Winding height
HVC
15
mm
Magnet
Flux density
B
0.93
T
Force factor
Bl
10.6
N/A
Motor constant
Bl/√RE
4.01
N/√W
Diameter
120
mm
Height
20
mm
Diaphragm
Effective diameter
102
mm
Effective area
SD
82
cm²
Moving mass
MMS
11.5
g
Moving mass (without air load)
MMD
10.9
g
Suspensions
Stiffness
KMS
0.83
N/mm
Compliance
CMS
1210
µm/N
Equivalent volume to the compliance
VAS
12
L
Mechanical resistance
RMS
0.91
N·s/m
Dimensions
Nominal diameter
4.5
″
120
mm
Overall diameter
150
mm
Baffle cutout diameter
124
mm
Overall depth
81
mm
Flange thickness
6
mm
Mounting depth
75
mm
Volume occupied by the driver (estimated)
0.63
L
Net weight
2.38
kg
Frame material
Aluminum
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SpeakerbenchSimilar woofers to Aurum Cantus AC120/50CK
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5″Woofer
fS
37 Hz
SD
95 cm²
37 - 4500 Hz
QTS
0.21
xmax
6.0 mm
SPL1W
88 dB
Bl/√RE
3.44
Pmax
300 W