General Characteristics |
| Nominal
Overall Diameter |
306mm |
12
in |
| Nominal
Voice Coil Diameter |
38mm |
1.5
in |
| Magnet
Weight |
640
g |
22.5
oz |
| Overall Weight |
5.30 lbs |
| Flux
Density |
1.16
T |
Thiele-Small Parameters |
| Voice
Coil DC Resistance |
RE |
5.30
Ω |
| Resonance
Frequency |
ƒS |
78
Hz |
| Mechanical
Q Factor |
QMS |
19.00 |
| Electrical
Q Factor |
QES |
1.15 |
| Total
Q Factor |
QTS |
1.08 |
| Mechanical
Moving Mass |
MMS |
30.5
g |
| Mechanical
Compliance |
CMS |
138
µm/N |
| Force
Factor |
BxL |
8.40
Wb/m |
| Equivalent
Acoustic Volume |
VAS |
46.7
lt. |
| Maximum
Linear Displacement |
XMAX |
1.5
mm |
| Reference
Efficiency |
nO |
1.82% |
| Diaphragm
Area |
SD |
491.0 cm2 |
| Losses
Electrical Resistance |
RES |
90
Ω |
| Voice
Coil Inductance @ 1kHz |
LE |
0.58
mH |
Constructive Characteristics |
| Magnet |
Ferrite |
| Voice
Coil Winding |
Copper |
| Voice
Coil Former |
Epotex |
| Cone |
Paper |
| Surround |
Integrated
Paper |
| Dust
Dome |
Non
Treated Cloth |
| Basket |
Pressed
Sheet Steel |
|
Electrical Characteristics |
| Nominal
Impedance |
8
Ω
|
| Rated
Power |
70
W
|
| Musical
Power |
140
W
|
| Sensitivity@1W,
1m |
96.3
dB
|
|
