21"

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  • 21SW152-4

    21SW152-4

    SpecificationsNominal diameter530 mm (21.0 in)Nominal impedance4 ΩMinimum impedance4.2 ΩNominal power handling12000 WContinuous power handling24000 WSensitivity (1W/1m)396.0 dBFrequency range30 - 1000 HzVoice coil diameter153 mm (6.0 in)Winding materialCopperFormer materialGlass FibreWinding depth30 mm (1.18 in)Magnetic gap depth12 mm (0.5 in)Flux density1.2 TDesignSurround shapeTriple RollCone shapeRadialMagnet materialNeodymium Inside SlugSpiderDouble SiliconePole designT-PoleWoofer cone treatmentTWP Waterproof Both SidesRecommended enclosure190.0 dm3 (6.71 ft3)Recommended tuning33 HzParameters4Fs32 HzRe3.3 ΩQes0.31 Qms7.0 Qts0.3 Vas200.0 dm3 (7.0 ft3)Sd1680.0 cm2 (260.4 in2)η₀2.2 %Xmax15.0 mmXvar16.0 mmMms460 gBl32.5 TxmLe1.5 mHEBP103 HzMounting And Shipping InfoOverall diameter547 mm (21.5 in)Bolt circle diameter527 mm (20.7 in)Baffle cutout diameter508.0 mm (20.0 in)Depth261 mm (10.3 in)Flange and gasket thickness16 mm (0.63 in)Air volume occupied by driver16.0 dm3 (0.56 ft3)Net weight18.5 kg (40.7 lb)Shipping units1Shipping weight20.9 kg (46.0 lb)Shipping box590x590x300 mm (23.2x23.2x11.8 in) 

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