| General Specifications |
| Nominal Diameter | 321 mm / 12 in
| | Nominal Impedance | 8 Ω
| | Rated Power AES | 450 W
| | Continuos Program Power | 900 W
| | Sensitivity @ 1W/1m | 92.2 dB
| | Voice Coil Diameter | 75 mm (3")
| | Voice Coil Winding Depth | 20 mm
| | Magnetic Gap Depth | 10 mm
| | Flux Density | 1.00 T
| | Magnet Weight | 1790 g
| | Net Weight | 6.7 Kg
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| Constructive Characteristics |
| Magnet Type | Ferrite
| | Basket Material | Aluminium Die-Cast
| | Voice Coil Winding Material | Copper
| | Voice Coil Former Material | Fiberglass
| | Cone Material | Paper
| | Cone Treatment | Surface Waterproof Treatment
| | Surround Material | Rubber
| | Dust Dome Material | Solid Paper
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| Mounting Information |
| Overall Diameter | 320 mm
| | Baffle Cutout Diameter | 284 mm
| | Mounting Holes | 8 holes 6 on Ø300 mm
| | Total Depth | 140.8 mm
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| Thiele/Small Parameters |
| Re | 5.2 Ω
| | Qms | 2.96
| | Qts | 0.40
| | Cms | 178 µm/N
| | Vas | 60.9 l
| | X max | +/- 8.0 mm
| | N | 0.65 %
| | Fs | 37.0 Hz
| | Qes | 0.46
| | Mms | 104.0 g
| | Bxl | 16.57 Tm
| | Sd | 490.9 cm²
| | X var | +/- 9.0 mm
| | Le (1KHz) | 1.29 mH
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