accuton C220-6-222
Mid Bass
8.5″ / 220 mm
Nominal diameter
30 Hz
Resonance
0.26
Q factor
90 dB
Sensitivity
± 6 mm
Linear excursion
300 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
29.5
Hz
Mechanical quality factor
QMS
5.61
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.26
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
134
cm³
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.2
Ω
Inductance (1kHz)
LE
0.37
mH
VC Diameter
55
mm
Winding material
Copper
Former material
Titanium
Magnet
Force factor
Bl
11.7
N/A
Motor constant
Bl/√RE
4.35
N/√W
Diameter
120
mm
Height
50
mm
Diaphragm
Effective diameter
169
mm
Effective area
SD
224
cm²
Moving mass
MMS
28
g
Moving mass (without air load)
MMD
25.5
g
Material
Ceramic
Suspensions
Stiffness
KMS
0.96
N/mm
Compliance
CMS
1040
µm/N
Equivalent volume to the compliance
VAS
74
L
Mechanical resistance
RMS
0.93
N·s/m
Dimensions
Nominal diameter
8.5
″
220
mm
Overall diameter
220
mm
Baffle cutout diameter
191
mm
Overall depth
113
mm
Flange thickness
9
mm
Mounting depth
104
mm
Volume occupied by the driver (estimated)
1.1
L
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8″Mid-range
fS
28 Hz
SD
210 cm²
28 - 4000 Hz
QTS
0.24
xmax
3.5 mm
SPL1W
90 dB
Bl/√RE
4.04
Pmax
100 W
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8″Woofer
fS
27 Hz
SD
216 cm²
25 - 4500 Hz
QTS
0.25
xmax
5.0 mm
SPL1W
90 dB
Bl/√RE
4.05
Pmax
300 W
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8″Subwoofer
fS
33 Hz
SD
220 cm²
30 - 3000 Hz
QTS
0.30
xmax
7.0 mm
SPL1W
91 dB
Bl/√RE
3.56
Pmax
250 W