BMS 5CN140

Coaxial

5″ / 135 mm
Nominal diameter
138 Hz
Resonance
0.69
Q factor
88 dB
Sensitivity
± 3.5 mm
Linear excursion
240 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
87.5
dB
Frequency response
80 - 4000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
138
Hz
Mechanical quality factor
QMS
3.40
Electrical quality factor
QES
0.87
Total quality factor
QTS
0.69

Large signal parameters

Maximum linear excursion
xmax
3.5
mm
Air volume displaced at xmax
VD
26
cm³
Power handling
P
120
W
Program power
Pmax
240
W

Voice Coil

Nominal impedance
Z
16
Ω
DC resistance
RE
12.2
Ω
Inductance (1kHz)
LE
0.45
mH
VC Diameter
38
mm
Winding height
HVC
12
mm
Winding material
Copper
Former material
Kapton

Magnet

Flux density
B
2.0
T
Force factor
Bl
10.7
N/A
Motor constant
Bl/√RE
3.06
N/√W
Air gap height
HAG
5
mm
Material
Neodymium

Diaphragm

Effective diameter
97
mm
Effective area
SD
74
cm²
Moving mass
MMS
9
g
Moving mass (without air load)
MMD
8.5
g
Material
Polyester

Suspensions

Stiffness
KMS
7.14
N/mm
Compliance
CMS
140
µm/N
Equivalent volume to the compliance
VAS
1.03
L
Mechanical resistance
RMS
2.3
N·s/m

Dimensions

Nominal diameter
5
135 x 135
mm
Overall size
135 x 135
mm
Baffle cutout diameter
117
mm
Overall depth
82
mm
Volume occupied by the driver (estimated)
0.34
L
Net weight
0.98
kg
Frame material
Cast Aluminum
BMS 5CN140 Impedance
BMS 5CN140 SPL
BMS 5CN140 Dimensions

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