Hertz Cento CX 130

2 Way

5″ / 130 mm
Nominal diameter
80 Hz
Resonance
0.56
Q factor
88 dB
Sensitivity
± 3.1 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
88.4
dB
Frequency response
65 - 22
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
80.0
Hz
Mechanical quality factor
QMS
3.50
Electrical quality factor
QES
0.67
Total quality factor
QTS
0.56

Large signal parameters

Maximum linear excursion
xmax
3.1
mm
Maximum excursion before damage
xlim
3.8
mm
Air volume displaced at xmax
VD
30
cm³
Power handling
P
50
W
Program power
Pmax
100
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.18
mH
VC Diameter
25
mm

Magnet

Force factor
Bl
4.2
N/A
Motor constant
Bl/√RE
2.35
N/√W
Diameter
80
mm
Material
Ferrite

Diaphragm

Effective diameter
110
mm
Effective area
SD
95
cm²
Moving mass
MMS
7.6
g
Moving mass (without air load)
MMD
7
g
Material
Semi-pressed paper + Mica

Suspensions

Stiffness
KMS
2.0
N/mm
Compliance
CMS
500
µm/N
Equivalent volume to the compliance
VAS
13.5
L
Mechanical resistance
RMS
1.09
N·s/m

Dimensions

Nominal diameter
5
130
mm
Overall diameter
130
mm
Baffle cutout diameter
119
mm
Overall depth
66
mm
Flange thickness
16
mm
Mounting depth
50
mm
Volume occupied by the driver (estimated)
0.24
L
Net weight
0.73
kg

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