6.75″ / 175 mm
Nominal diameter
39 Hz
Resonance
0.42
Q factor
87 dB
Sensitivity
± 5.5 mm
Linear excursion
120 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.2
dB
Frequency response
39 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
39.0
Hz
Mechanical quality factor
QMS
2.57
Electrical quality factor
QES
0.50
Total quality factor
QTS
0.42
Large signal parameters
Maximum linear excursion
xmax
5.5
mm
Air volume displaced at xmax
VD
77
cm³
Power handling
P
70
W
Program power
Pmax
120
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.5
Ω
Inductance (1kHz)
LE
0.71
mH
VC Diameter
25
mm
Winding material
Aluminium
Magnet
Force factor
Bl
6.4
N/A
Motor constant
Bl/√RE
2.51
N/√W
Diameter
90
mm
Weight
0.45
kg
Diaphragm
Effective diameter
134
mm
Effective area
SD
140
cm²
Moving mass
MMS
13.9
g
Moving mass (without air load)
MMD
12.6
g
Suspensions
Stiffness
KMS
0.83
N/mm
Compliance
CMS
1200
µm/N
Equivalent volume to the compliance
VAS
33
L
Mechanical resistance
RMS
1.33
N·s/m
Dimensions
Nominal diameter
6.75
″
175
mm
Overall diameter
175
mm
Baffle cutout diameter
152
mm
Overall depth
79
mm
Flange thickness
6
mm
Mounting depth
73
mm
Volume occupied by the driver (estimated)
0.47
L
Net weight
1.31
kg
Similar woofers to MONACOR SPH-175HQ
6.75″Mid-range
fS
38 Hz
SD
137 cm²
38 - 5000 Hz
QTS
0.44
xmax
3.0 mm
SPL1W
87 dB
Bl/√RE
2.37
Pmax
80 W
6.5″
fS
41 Hz
SD
131 cm²
41 - 3000 Hz
QTS
0.50
xmax
3.0 mm
SPL1W
87 dB
Bl/√RE
2.53
Pmax
120 W
6.5″
fS
40 Hz
SD
131 cm²
40 - 3000 Hz
QTS
0.42
xmax
3.0 mm
SPL1W
88 dB
Bl/√RE
2.8
Pmax
120 W