6.5″ / 165 mm
Nominal diameter
37 Hz
Resonance
0.19
Q factor
92 dB
Sensitivity
± 6 mm
Linear excursion
300 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
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
92.2
dB
Frequency response
37 - 4500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.0
Hz
Mechanical quality factor
QMS
3.68
Electrical quality factor
QES
0.20
Total quality factor
QTS
0.19
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
80
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
12.3
N/A
Motor constant
Bl/√RE
4.65
N/√W
Diameter
120
mm
Height
20
mm
Diaphragm
Effective diameter
130
mm
Effective area
SD
133
cm²
Moving mass
MMS
13.7
g
Moving mass (without air load)
MMD
12.5
g
Suspensions
Stiffness
KMS
1.03
N/mm
Compliance
CMS
970
µm/N
Equivalent volume to the compliance
VAS
24
L
Mechanical resistance
RMS
0.87
N·s/m
Dimensions
Nominal diameter
6.5
″
165
mm
Overall diameter
178
mm
Baffle cutout diameter
150
mm
Overall depth
89
mm
Flange thickness
6
mm
Mounting depth
83
mm
Volume occupied by the driver (estimated)
0.76
L
Net weight
2.4
kg
Similar woofers to Aurum Cantus AC165/50CK
8″Subwoofer
fS
40 Hz
SD
227 cm²
45 - 1200 Hz
QTS
0.19
xmax
7.4 mm
SPL1W
91 dB
Bl/√RE
7.4
Pmax
700 W
6.5″Woofer
fS
37 Hz
SD
133 cm²
37 - 4000 Hz
QTS
0.19
xmax
6.0 mm
SPL1W
91 dB
Bl/√RE
4.08
Pmax
300 W
6.5″Woofer
fS
40 Hz
SD
132 cm²
QTS
0.21
xmax
4.5 mm
SPL1W
89 dB
Bl/√RE
4.26
Pmax
200 W