8″ / 185 mm
Nominal diameter
38 Hz
Resonance
0.32
Q factor
90 dB
Sensitivity
± 10 mm
Linear excursion
250 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
89.5
dB
Frequency response
40 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
38.0
Hz
Mechanical quality factor
QMS
6.00
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
10.0
mm
Air volume displaced at xmax
VD
194
cm³
Power handling
P
125
W
Program power
Pmax
250
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.6
Ω
Inductance (1kHz)
LE
0.1
mH
VC Diameter
79
mm
Magnet
Force factor
Bl
11.6
N/A
Motor constant
Bl/√RE
4.52
N/√W
Diameter
120
mm
Height
64
mm
Material
NdFeB (grade N40H)
Diaphragm
Effective diameter
157
mm
Effective area
SD
194
cm²
Moving mass
MMS
29
g
Moving mass (without air load)
MMD
27.1
g
Material
hexaKone paper cone
Suspensions
Stiffness
KMS
1.66
N/mm
Compliance
CMS
604
µm/N
Equivalent volume to the compliance
VAS
32.2
L
Mechanical resistance
RMS
1.38
N·s/m
Surround material
Low lost NBR
Dimensions
Nominal diameter
8
″
185
mm
Overall diameter
185
mm
Volume occupied by the driver (estimated)
1.8
L
Net weight
4.12
kg
Frame material
Injected aluminium (ACD12)
Similar speaker drivers to Kartesian Bom185_vKi
8″Woofer
fS
36 Hz
SD
194 cm²
35 - 2200 Hz
QTS
0.29
xmax
10.0 mm
SPL1W
90 dB
Bl/√RE
4.57
Pmax
250 W
7″Mid-range
fS
34 Hz
SD
137 cm²
34 - 3000 Hz
QTS
0.30
xmax
4.5 mm
SPL1W
88 dB
Bl/√RE
3.37
Pmax
160 W
6.75″Mid-range
fS
39 Hz
SD
140 cm²
39 - 4500 Hz
QTS
0.37
xmax
5.5 mm
SPL1W
89 dB
Bl/√RE
3.0
Pmax
120 W