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Scan-Speak Illuminator 15W/8741T-00 5" Woofer
- Paper cone
- Cast frame
- Neodymium motor
- Underhung voice coil
- long excursion
The Illuminator woofers are based on compact under-hung motor systems with large neodymium ring magnets. The patent pending motor offers a very long linear excursion together with a very high force factor. The top plate is shaped to “guide” the backside airflow around the motor and with the very open cast aluminum chassis design the driver is virtually free from compression.
| Electrical Data |
| Nominal Impedance |
Zn |
8 |
ohm |
| Minimum Impedance |
Zmin |
7.9 |
ohm |
| Maximum Impedance |
Zo |
70.3 |
ohm |
| DC Resistance |
Re |
5.9 |
ohm |
| Voice Coil Inductance |
Le |
0.41 |
mH |
| TS Parameters |
| Resonance Frequency |
fs |
35 |
Hz |
| Mechanical Q factor |
QMS |
3.37 |
|
| Electrical Q factor |
QES |
0.28 |
|
| Total Q factor |
Qts |
0.26 |
|
| Force Factor |
Bl |
7.5 |
Tm |
| Mechanical Resistance |
Rms |
0.8 |
Kg/s |
| Moving Mass |
Mms |
12.3 |
g |
| Suspension Compliance |
Cms |
1.68 |
mm/N |
| Effective Piston Area |
sd |
92 |
cm^2 |
| Equivalent Volume |
Vas |
20.1 |
ltrs |
| Sensitivity |
2.83V/1m |
83.4 |
dB |
| Power Handling |
| 100h RMS noise test |
IEC |
80 |
W |
| Long-term Max Power |
IEC 18.3 |
150 |
W |
| Short Term Max power |
IEC 18.2 |
200 |
ohm |
| Voice Coil and Magnet Parameters |
| Voice Coil Diameter |
|
42 |
mm |
| Voice Coil Height |
|
8 |
mm |
| Voice Coil Layers |
|
4 |
|
| Height of the Gap |
|
20 |
mm |
| Linear Excursion +/- |
|
6 |
mm |
| Max mech. excursion +/- |
|
12 |
mm |
| Diameter of Magnet |
|
90 |
mm |
| Height of Magnet |
|
4 |
mm |
| Weight of Magnet |
|
.13 |
Kg |
Suggested box sizes:
Sealed box of 0.15 cubic feet for an F3 of 115Hz
Vented box of 0.2 cubic feet with 1.5" diameter vent by 6" long for F3 of 60Hz
Extended bass shelf of 0.3 cubic feet with 1.5" diameter vent by 6" long for F3 of 56Hz.
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