8″ / 210 mm
Nominal diameter
75 Hz
Resonance
0.46
Q factor
91 dB
Sensitivity
± 4 mm
Linear excursion
200 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
90.9
dB
Frequency response
75 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
75.0
Hz
Mechanical quality factor
QMS
3.11
Electrical quality factor
QES
0.54
Total quality factor
QTS
0.46
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
85
cm³
Power handling
P
100
W
Program power
Pmax
200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
0.8
mH
VC Diameter
50
mm
Winding material
Aluminium
Magnet
Force factor
Bl
12.26
N/A
Motor constant
Bl/√RE
4.92
N/√W
Diameter
130
mm
Weight
1.1
kg
Diaphragm
Effective diameter
165
mm
Effective area
SD
213
cm²
Moving mass
MMS
27
g
Moving mass (without air load)
MMD
24.7
g
Suspensions
Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
10
L
Mechanical resistance
RMS
4.09
N·s/m
Dimensions
Nominal diameter
8
″
210
mm
Overall diameter
210
mm
Baffle cutout diameter
184
mm
Overall depth
105
mm
Flange thickness
10
mm
Mounting depth
95
mm
Volume occupied by the driver (estimated)
1.1
L
Net weight
3.2
kg
Similar woofers to MONACOR SPA-8PA
8″Woofer
fS
69 Hz
SD
220 cm²
70 - 5000 Hz
QTS
0.41
xmax
6.5 mm
SPL1W
91 dB
Bl/√RE
5.31
Pmax
400 W
6.5″Woofer
fS
80 Hz
SD
143 cm²
80 - 3500 Hz
QTS
0.43
xmax
5.0 mm
SPL1W
92 dB
Bl/√RE
3.35
Pmax
260 W
8″Woofer
fS
74 Hz
SD
227 cm²
70 - 2500 Hz
QTS
0.38
xmax
6.8 mm
SPL1W
92 dB
Bl/√RE
5.68
Pmax
500 W