Hertz Cento C 165 L

Woofer

6.5″ / 165 mm
Nominal diameter
60 Hz
Resonance
0.6
Q factor
88 dB
Sensitivity
± 5.1 mm
Linear excursion
240 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
87.6
dB
Frequency response
50 - 5000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
60.0
Hz
Mechanical quality factor
QMS
3.80
Electrical quality factor
QES
0.70
Total quality factor
QTS
0.60

Large signal parameters

Maximum linear excursion
xmax
5.1
mm
Maximum excursion before damage
xlim
6.1
mm
Air volume displaced at xmax
VD
69
cm³
Power handling
P
80
W
Program power
Pmax
240
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.23
mH
VC Diameter
25
mm

Magnet

Force factor
Bl
4.9
N/A
Motor constant
Bl/√RE
2.74
N/√W
Diameter
85
mm
Height
17
mm
Material
Ferrite

Diaphragm

Effective diameter
132
mm
Effective area
SD
136
cm²
Moving mass
MMS
14.2
g
Moving mass (without air load)
MMD
13
g
Material
Water repellent non pressed paper

Suspensions

Stiffness
KMS
1.92
N/mm
Compliance
CMS
520
µm/N
Equivalent volume to the compliance
VAS
13.7
L
Mechanical resistance
RMS
1.41
N·s/m

Dimensions

Nominal diameter
6.5
165
mm
Overall diameter
165
mm
Baffle cutout diameter
142
mm
Overall depth
71
mm
Flange thickness
8
mm
Mounting depth
63
mm
Volume occupied by the driver (estimated)
0.35
L
Net weight
0.973
kg
Hertz C 165 L SPL & Impedance

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