6x9″/ 152x229 mm
Nominal size
50 Hz
Resonance
0.43
Q factor
89 dB
Sensitivity
± 4 mm
Linear excursion
260 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
89.4
dB
Frequency response
30 - 24000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
50.0
Hz
Mechanical quality factor
QMS
2.00
Electrical quality factor
QES
0.55
Total quality factor
QTS
0.43
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
89
cm³
Power handling
P
130
W
Program power
Pmax
260
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz)
LE
0.07
mH
VC Diameter
38
mm
Magnet
Force factor
Bl
7.2
N/A
Motor constant
Bl/√RE
4.16
N/√W
Material
High density flux ferrite
Diaphragm
Effective diameter
169
mm
Effective area
SD
223
cm²
Moving mass
MMS
30
g
Moving mass (without air load)
MMD
28.4
g
Material
Pressed-pulp cone with cotton fibers
Suspensions
Stiffness
KMS
2.94
N/mm
Compliance
CMS
340
µm/N
Equivalent volume to the compliance
VAS
24
L
Mechanical resistance
RMS
4.71
N·s/m
Dimensions
Nominal size
6 x 9
″
152 x 229
mm
Volume occupied by the driver (estimated)
0.4
L
Similar woofers to Hertz MPX 690.3 PRO
6.5″Mid Bass
fS
50 Hz
SD
137 cm²
QTS
0.43
xmax
4.2 mm
SPL1W
89 dB
Bl/√RE
3.04
Pmax
170 W
6.5″Mid Bass
fS
50 Hz
SD
137 cm²
40 - 4000 Hz
QTS
0.48
xmax
4.0 mm
SPL1W
88 dB
Bl/√RE
3.0
Pmax
170 W
6.5″Low frequency
fS
49 Hz
SD
154 cm²
70 - 7000 Hz
QTS
0.38
xmax
6.0 mm
SPL1W
90 dB
Bl/√RE
3.56
Pmax
300 W