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Thunder7128 - Thunder7000, 12" 8 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" 4 Layer Voice Coil on Kapton MTB Former
For High Power Handling and Excursion
| Free Air Resonance |
Fs |
27.5 Hz |
| Volume Acoustic Suspension |
Vas |
3.27 Ft^3 |
(92.6 l) |
| Total Q |
Qts |
.63 |
| Electrical Q |
Qes |
.67 |
| Mechanical Q |
Qms |
9.89 |
| DC Resistance |
Re |
7.37 Ohm |
| Linear Excursion (One Way) |
Xmax |
.50” |
(12.7 mm) |
| Effective Piston Diameter |
D |
10.125” |
(.2572 m) |
| RMS Power Handling |
RMS |
400 Watts |
| Total Power Handling |
Total |
1000 Watts |
| Sensitivity 1W/1m |
SPLo |
86.7 dB |
| Reference Efficiency |
No |
0.27% |
| Frequency Response |
|
28 - 150Hz |
| Voice Coil Inductance |
Le |
5.6 mH |
| Gap Height |
|
.375” |
(9.5 mm) |
| Voice Coil Height |
|
1.250” |
(31.8 mm) |
| Motor Force |
BL |
16.14 Tm |
| Compliance |
Cms |
.244 mm/N |
| Total Moving Mass |
Mms |
137.1 g |
| Moving Mass of Driver |
Mmd |
130.3 g |
| Suspension Losses |
Rms |
2.39 |
| Effective Surface Area |
Sd |
80.5 in^2 |
(.0519m^2) |
| Mounting Diameter |
|
11” |
(279.4 mm) |
| Overall Diameter |
|
12 3/4 ” |
(323.9 mm) |
| Mounting Depth |
|
5 3/8 ” |
(136.5 mm) |
| Overall Depth |
|
6 1/16” |
(154.0 mm) |
| Speaker Displacement (Inside Box) |
|
247in^2 |
(4.0 l) |
| Speaker Displacement (Outside Box) |
|
172in^2 |
(2.8 l) |
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