VISATON BG 20 - 8 Ohm
Full-range
8″ / 200 mm
Nominal diameter
38 Hz
Resonance
0.44
Q factor
93 dB
Sensitivity
± 2 mm
Linear excursion
70 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
92.7
dB
Frequency response
38 - 18000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
38.0
Hz
Mechanical quality factor
QMS
3.47
Electrical quality factor
QES
0.51
Total quality factor
QTS
0.44
Large signal parameters
Maximum linear excursion
xmax
2.0
mm
Maximum excursion before damage
xlim
4.0
mm
Air volume displaced at xmax
VD
43
cm³
Power handling
P
40
W
Program power
Pmax
70
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
0.8
mH
VC Diameter
25
mm
Winding height
HVC
8
mm
Magnet
Flux density
B
1.2
T
Force factor
Bl
6.1
N/A
Motor constant
Bl/√RE
2.45
N/√W
Air gap height
HAG
4
mm
Diaphragm
Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
10
g
Moving mass (without air load)
MMD
7.8
g
Suspensions
Stiffness
KMS
0.59
N/mm
Compliance
CMS
1693
µm/N
Equivalent volume to the compliance
VAS
110
L
Mechanical resistance
RMS
0.69
N·s/m
Dimensions
Nominal diameter
8
″
200
mm
Baffle cutout diameter
184
mm
Volume occupied by the driver (estimated)
0.52
L
Net weight
1.3
kg
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