12″ / 320 mm
Nominal diameter
53 Hz
Resonance
0.43
Q factor
95 dB
Sensitivity
± 5 mm
Linear excursion
450 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
94.9
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
53.0
Hz
Mechanical quality factor
QMS
13.50
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.43
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
274
cm³
Power handling
P
220
W
Program power
Pmax
450
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.8
Ω
Inductance (1kHz)
LE
0.6
mH
VC Diameter
50
mm
Winding height
HVC
13.5
mm
Former material
Glass fiber
Magnet
Force factor
Bl
10.6
N/A
Motor constant
Bl/√RE
6.33
N/√W
Air gap height
HAG
8
mm
Diaphragm
Effective diameter
264
mm
Effective area
SD
547
cm²
Moving mass
MMS
54
g
Moving mass (without air load)
MMD
45
g
Material
Doped cellulose fiber
Suspensions
Stiffness
KMS
5.88
N/mm
Compliance
CMS
170
µm/N
Equivalent volume to the compliance
VAS
70
L
Mechanical resistance
RMS
1.33
N·s/m
Surround material
Nomex Fabric
Spider material
Nomex Fabric
Dimensions
Nominal diameter
12
″
320
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
135
mm
Flange thickness
13
mm
Mounting depth
122
mm
Volume occupied by the driver (estimated)
1.5
L
Net weight
2.7
kg
Similar woofers to Ciare CMI320ND
12″Woofer
fS
53 Hz
SD
547 cm²
QTS
0.43
xmax
5.0 mm
SPL1W
95 dB
Bl/√RE
6.33
Pmax
450 W
12″Woofer
fS
55 Hz
SD
547 cm²
QTS
0.44
xmax
5.0 mm
SPL1W
95 dB
Bl/√RE
5.88
Pmax
450 W
12″Woofer
fS
55 Hz
SD
547 cm²
QTS
0.44
xmax
5.0 mm
SPL1W
95 dB
Bl/√RE
5.93
Pmax
450 W