5.25″ / 133 mm
Nominal diameter
40 Hz
Resonance
0.39
Q factor
86 dB
Sensitivity
± 3.5 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.7
dB
Frequency response
40 - 8000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
40.0
Hz
Mechanical quality factor
QMS
4.48
Electrical quality factor
QES
0.43
Total quality factor
QTS
0.39
Large signal parameters
Maximum linear excursion
xmax
3.5
mm
Air volume displaced at xmax
VD
33
cm³
Power handling
P
50
W
Program power
Pmax
80
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
0.75
mH
VC Diameter
36
mm
Magnet
Force factor
Bl
6.5
N/A
Motor constant
Bl/√RE
2.65
N/√W
Diameter
100
mm
Weight
0.5
kg
Diaphragm
Effective diameter
110
mm
Effective area
SD
95
cm²
Moving mass
MMS
12
g
Moving mass (without air load)
MMD
11.3
g
Suspensions
Stiffness
KMS
0.74
N/mm
Compliance
CMS
1350
µm/N
Equivalent volume to the compliance
VAS
17
L
Mechanical resistance
RMS
0.67
N·s/m
Dimensions
Nominal diameter
5.25
″
133 x 133
mm
Overall size
133 x 133
mm
Baffle cutout diameter
122
mm
Overall depth
75
mm
Flange thickness
4
mm
Mounting depth
71
mm
Volume occupied by the driver (estimated)
0.4
L
Net weight
1.43
kg
Similar woofers to MONACOR SPH-135C
7″Woofer
fS
38 Hz
SD
125 cm²
41 - 3600 Hz
QTS
0.36
xmax
6.0 mm
SPL1W
86 dB
Bl/√RE
2.88
Pmax
120 W
5.5″Mid Bass
fS
39 Hz
SD
95 cm²
QTS
0.39
xmax
6.5 mm
SPL1W
85 dB
Bl/√RE
2.73
Pmax
110 W
5.5″Mid Bass
fS
39 Hz
SD
95 cm²
QTS
0.38
xmax
6.5 mm
SPL1W
85 dB
Bl/√RE
2.74
Pmax
110 W