6.7″ / 170 mm
Nominal diameter
85 Hz
Resonance
0.95
Q factor
90 dB
Sensitivity
± 2 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
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.9
dB
Frequency response
60 - 21000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
85.0
Hz
Mechanical quality factor
QMS
4.39
Electrical quality factor
QES
1.21
Total quality factor
QTS
0.95
Large signal parameters
Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
28
cm³
Power handling
P
50
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz, estimated)
LE
0.18
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
3.7
N/A
Motor constant
Bl/√RE
1.95
N/√W
Material
High density flux ferrite
Diaphragm
Effective diameter
133
mm
Effective area
SD
141
cm²
Moving mass
MMS
8.8
g
Moving mass (without air load)
MMD
7.6
g
Material
Water-repellent pressed paper
Suspensions
Stiffness
KMS
2.5
N/mm
Compliance
CMS
400
µm/N
Equivalent volume to the compliance
VAS
11.3
L
Mechanical resistance
RMS
1.07
N·s/m
Dimensions
Nominal diameter
6.7
″
170
mm
Volume occupied by the driver (estimated)
0.54
L
Similar speaker drivers to Hertz DCX 170.3
6.7″2 Way Kit
fS
79 Hz
SD
141 cm²
50 - 23000 Hz
QTS
0.96
xmax
2.0 mm
SPL1W
90 dB
Bl/√RE
2.06
Pmax
160 W
5 x 7″2 Way
fS
81 Hz
SD
145 cm²
60 - 21000 Hz
QTS
0.82
xmax
2.0 mm
SPL1W
89 dB
Bl/√RE
2.37
Pmax
120 W
8″Mid-range
fS
68 Hz
SD
216 cm²
68 - 4500 Hz
QTS
1.10
xmax
3.0 mm
SPL1W
90 dB
Bl/√RE
2.06
Pmax
100 W