Ciare HM087
Mid-range
3.5″ / 87 mm
Nominal diameter
270 Hz
Resonance
1.39
Q factor
89 dB
Sensitivity
± 2.1 mm
Linear excursion
90 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.5
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
270
Hz
Mechanical quality factor
QMS
4.40
Electrical quality factor
QES
2.02
Total quality factor
QTS
1.39
Large signal parameters
Maximum linear excursion
xmax
2.1
mm
Air volume displaced at xmax
VD
7.4
cm³
Power handling
P
30
W
Program power
Pmax
90
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.3
Ω
Inductance (1kHz)
LE
0.2
mH
VC Diameter
20
mm
Winding height
HVC
6.2
mm
Former material
Aluminum
Magnet
Force factor
Bl
4.14
N/A
Motor constant
Bl/√RE
1.53
N/√W
Air gap height
HAG
4
mm
Diaphragm
Effective diameter
67
mm
Effective area
SD
35
cm²
Moving mass
MMS
2.8
g
Moving mass (without air load)
MMD
2.6
g
Material
Treated Cellulose
Suspensions
Stiffness
KMS
8.33
N/mm
Compliance
CMS
120
µm/N
Equivalent volume to the compliance
VAS
0.2
L
Mechanical resistance
RMS
1.08
N·s/m
Surround material
Doped fabric
Dimensions
Nominal diameter
3.5
″
87
mm
Overall diameter
87
mm
Baffle cutout diameter
77
mm
Overall depth
42
mm
Flange thickness
5
mm
Mounting depth
37
mm
Volume occupied by the driver (estimated)
0.11
L
Net weight
0.37
kg
Frame material
Steel
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SpeakerbenchSimilar speaker drivers to Ciare HM087
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1.25 x 3″Full-range
fS
211 Hz
SD
16 cm²
150 - 17000 Hz
QTS
1.26
xmax
2.1 mm
SPL1W
84 dB
Bl/√RE
1.07
Pmax
20 W