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Thunder7154 - Thunder7000, 15" 4 Ohm Subwoofer
- Die Cast Aluminum Frame
- Gold Plated Binding Post
- Gold Plated Terminals
- Magnetically Optimised extended pole piece w/ noiseless vent
- Injection Molded Magnet Boot
Protects the magnet from damage.
- Congruent Edge Technology
Gasket and Surround are co-molded of EPDM
- Computer Optimized Progressive Roll
For Low Distortion and High Travel
- 102 oz Strontium Ferrite Magnet
For High Efficiency
- 2.5" 8 Layer Voice Coil on Kapton MTB Former
For High Power Handling and Excursion
| Free Air Resonance |
Fs |
20.3 Hz |
| Volume Acoustic Suspension |
Vas |
7.09 Ft^3 |
(200.8 l) |
| Total Q |
Qts |
.39 |
| Electrical Q |
Qes |
.41 |
| Mechanical Q |
Qms |
10.71 |
| DC Resistance |
Re |
3.67 Ohm |
| Linear Excursion (One Way) |
Xmax |
.50” |
(12.7 mm) |
| Effective Piston Diameter |
D |
13.000” |
(.3302 m) |
| RMS Power Handling |
RMS |
500 Watts |
| Total Power Handling |
Total |
1500 Watts |
| Sensitivity 1W/1m |
SPLo |
88.3 dB |
| Reference Efficiency |
No |
0.39% |
| Frequency Response |
|
20 - 150Hz |
| Voice Coil Inductance |
Le |
5.5 mH |
| Gap Height |
|
.375” |
(9.5 mm) |
| Voice Coil Height |
|
1.250” |
(31.8 mm) |
| Motor Force |
BL |
18.97 Tm |
| Compliance |
Cms |
.195 mm/N |
| Total Moving Mass |
Mms |
315.3 g |
| Moving Mass of Driver |
Mmd |
300.9 g |
| Suspension Losses |
Rms |
3.75 |
| Effective Surface Area |
Sd |
132.7 in^2 |
(.0856m^2) |
| Mounting Diameter |
|
14” |
(355.6 mm) |
| Overall Diameter |
|
15 5/8 ” |
(396.9 mm) |
| Mounting Depth |
|
6 9/16” |
(166.7 mm) |
| Overall Depth |
|
7 3/16” |
(182.6 mm) |
| Speaker Displacement (Inside Box) |
|
352in^2 |
(5.8 l) |
| Speaker Displacement (Outside Box) |
|
235in^2 |
(3.9 l) |
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