General Characteristics |
| Nominal
Overall Diameter |
207mm |
8
in
|
| Nominal
Voice Coil Diameter |
25mm |
1
in
|
| Magnet
Weight |
280
g |
9.9
oz
|
| Flux
Density |
1.0
T |
Thiele-Small Parameters |
| Voice
Coil DC Resistance |
RE |
7.0Ω
|
| Resonance
Frequency |
ƒS |
125.0Hz
|
| Mechanical
Q Factor |
QMS |
11.61
|
| Electrical
Q Factor |
QES |
2.21
|
| Total
Q Factor |
QTS |
1.86
|
| Mechanical
Moving Mass |
MMS |
8.7
g
|
| Mechanical
Compliance |
CMS |
182µm/N
|
| Force
Factor |
BxL |
4.69
Wb/m
|
| Equivalent
Acoustic Volume |
VAS |
11.7
lt.
|
| Maximum
Linear Displacement |
XMAX |
1.0
mm
|
| Reference
Efficiency |
nO |
1.03
%
|
| Diaphragm
Area |
SD |
213.8
cm2
|
| Losses
Electrical Resistance |
RES |
37Ω
|
| Voice
Coil Inductance @ 1kHz |
LE |
0.43
mH
|
Constructive Characteristics |
| Magnet |
Ferrite |
| Voice
Coil Winding |
Copper |
| Voice
Coil Former |
Epotex |
| Cone |
Paper |
| Surround |
Integrated
Paper |
| Dust
Dome |
Treated
Cloth |
| Basket |
Pressed
Sheet Steel |
|
Electrical Characteristics |
| Nominal
Impedance |
4/8
Ω
|
| Rated
Power |
25
W
|
| Musical
Power |
50
W
|
| Sensitivity@1W,
1m |
92.7
dB
|
|
