Ciare NDI12.50W

Woofer

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
Discard
Apply
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
Frame material
Aluminium
Ciare NDI12.50W Impedance
Ciare NDI12.50W SPL
Ciare NDI12.50W Dimensions

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