Hertz Cento CX 100

2 Way

4″ / 100 mm
Nominal diameter
100 Hz
Resonance
0.72
Q factor
87 dB
Sensitivity
± 2.3 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
86.5
dB
Frequency response
80 - 22
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
100
Hz
Mechanical quality factor
QMS
3.10
Electrical quality factor
QES
0.94
Total quality factor
QTS
0.72

Large signal parameters

Maximum linear excursion
xmax
2.3
mm
Air volume displaced at xmax
VD
14
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
0.18
mH
VC Diameter
25
mm

Magnet

Force factor
Bl
3.5
N/A
Motor constant
Bl/√RE
1.96
N/√W
Diameter
70
mm
Material
Ferrite

Diaphragm

Effective diameter
86
mm
Effective area
SD
59
cm²
Moving mass
MMS
5.1
g
Moving mass (without air load)
MMD
4.8
g
Material
Semi-pressed paper + Mica

Suspensions

Stiffness
KMS
2.63
N/mm
Compliance
CMS
380
µm/N
Equivalent volume to the compliance
VAS
1.86
L
Mechanical resistance
RMS
1.03
N·s/m

Dimensions

Nominal diameter
4
100
mm
Overall diameter
103
mm
Baffle cutout diameter
93
mm
Overall depth
58
mm
Flange thickness
14
mm
Mounting depth
44
mm
Volume occupied by the driver (estimated)
0.22
L
Net weight
0.96
kg
Hertz CX 100 SPL & Impedance

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