Technical data
| – | +1 TM | +2 TM | +3 TM | ||
| Power handling RMS / max. | P | 750 / 1,500 Watts | |||
| Recommended amplifier power | RMS | from 300 Watts | |||
| Impedance | Z | 2 x 2 Ω | |||
| DC resistance | Re | 2 x 1.9 Ω | |||
| Resonance frequency | Fs | 36 Hz | 32 Hz | 29 Hz | 27 Hz |
| Mechanical Q factor | Qms | 5.37 | |||
| Electrical Q factor | Qes | 0.53 | 0.59 | 0.64 | 0.69 |
| Total Q factor | Qts | 0.48 | 0.53 | 0.57 | 0.62 |
| Compliance | Cms | 96 μm/N | |||
| Equivalent air volume | Vas | 35 L | |||
| Force factor | B*I | 18.1 Tm | |||
| Sensitivity | SPL | 90 dB @ 2.83V / 1m 87 dB @ 1W / 1m |
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| Cone area | Sd | 515 cm² | |||
| Moving mass | Mms | 199 g | 252 g | 305 g | 358 g |
| Cone material | Fiberglass-Mylar honeycomb cone | ||||
| Mechanical resistance | Rms | 8.5 kg/s | |||
| Voice coil diameter | ø | 63 mm | |||
| Voice coil winding height | 34 mm | ||||
| Max. linear excursion | Xmax | +/- 12 mm | |||
| Outer diameter | ø | 327.1 mm / 12.88″ | |||
| Installation diameter | ø | 281 mm / 11.06″ | |||
| Installation depth | 144.7 mm / 5.70″ | ||||
| Recommended enclosure volumes | |||||
| Sealed box | |||||
| Net volume | 33 L | 47 L | 65 L | 115 L | |
| Lower limiting frequency (-3dB) | 53 Hz | 44 Hz | 37 Hz | 31 Hz | |
| Bassreflex-Gehäuse | |||||
| Net volume | 70 L | 90 L | 110 L | 140 L | |
| Port diameter | ø | 100 mm | |||
| Port area | 78 cm² | ||||
| Port length | 27 cm | 31 cm | 37 cm | 39 cm | |
| Port tuning frequency | Fb | 31 Hz | 26 Hz | 22 Hz | 19 Hz |
| Lower limiting frequency (-3dB) | 27 Hz | 22 Hz | 19 Hz | 16 Hz | |
| TM = Tuning Mass | |||||
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