Ciare PA087

Full-range

3.5″ / 87 mm
Nominal diameter
74 Hz
Resonance
0.62
Q factor
83 dB
Sensitivity
± 2 mm
Linear excursion
80 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
82.8
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
74.0
Hz
Mechanical quality factor
QMS
5.13
Electrical quality factor
QES
0.71
Total quality factor
QTS
0.62

Large signal parameters

Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
6.6
cm³
Power handling
P
40
W
Program power
Pmax
80
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
0.27
mH
VC Diameter
25
mm
Former material
Kapton

Magnet

Force factor
Bl
3.45
N/A
Motor constant
Bl/√RE
1.46
N/√W
Air gap height
HAG
5
mm

Diaphragm

Effective diameter
65
mm
Effective area
SD
33
cm²
Moving mass
MMS
3.2
g
Moving mass (without air load)
MMD
3.1
g
Material
Cellulose

Suspensions

Stiffness
KMS
0.7
N/mm
Compliance
CMS
1420
µm/N
Equivalent volume to the compliance
VAS
2.2
L
Mechanical resistance
RMS
0.29
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
3.5
87
mm
Overall diameter
87
mm
Baffle cutout diameter
77
mm
Overall depth
50
mm
Flange thickness
5
mm
Mounting depth
45
mm
Volume occupied by the driver (estimated)
0.14
L
Net weight
0.6
kg
Frame material
Steel
Ciare PA087 SPL & Impedance
Ciare PA087 Dimensions

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