accuton C220-6-221

Mid Bass

8.5″ / 220 mm
Nominal diameter
26 Hz
Resonance
0.4
Q factor
87 dB
Sensitivity
± 5 mm
Linear excursion
300 W
Program Power
accuton C220-6-221 Mid Bassaccuton C220-6-221 Mid Bass
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
87.3
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
26.3
Hz
Mechanical quality factor
QMS
7.10
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.40

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
112
cm³
Power handling
P
150
W
Program power
Pmax
300
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
0.83
mH
VC Diameter
38
mm
Winding material
Copper
Former material
Titanium

Magnet

Force factor
Bl
8.7
N/A
Motor constant
Bl/√RE
3.47
N/√W
Diameter
120
mm
Height
42
mm

Diaphragm

Effective diameter
169
mm
Effective area
SD
224
cm²
Moving mass
MMS
30.4
g
Moving mass (without air load)
MMD
27.9
g
Material
Ceramic

Suspensions

Stiffness
KMS
0.83
N/mm
Compliance
CMS
1200
µm/N
Equivalent volume to the compliance
VAS
86.2
L
Mechanical resistance
RMS
0.71
N·s/m

Dimensions

Nominal diameter
8.5
″
220
mm
Overall diameter
220
mm
Baffle cutout diameter
191
mm
Overall depth
105
mm
Flange thickness
9
mm
Mounting depth
96
mm
Volume occupied by the driver (estimated)
1.0
L
Impedance
SPL
Distortion
accuton C220-6-221 Impedance
accuton C220-6-221 SPL
accuton C220-6-221 Distortion
accuton C220-6-221 Dimensions

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