Eminence 18″ Speaker 500 Watt 8 Ohm Long Throw Subwoofer Delta Pro-18A

Description

Speacifications:Nominal Basket Diameter: 18″, 457 mmNominal Impedance*: 8 ╬ęPower Rating**Watts: 500 WMusic Program: 1000 WResonance: 28 HzUsable Frequency Vary: 37 Hz – 0.2 kHzSensitivity***: 96 dBMagnet Weight: 67 ouncesGap Height: 0.38″, 9.7 mmVoice Coil Diameter: 2.5″, 64 mmThiele & Small ParametersResonant Frequency (fs): 28 HzDC Resistance (Re): 5.3 ╬ęCoil Inductance (Le): 3.43m HMechanical Q (Qms): 10.38 Electromagnetic Q (Qes): 0.33Total Q (Qts): 0.32Compliance An identical Volume (Vas): 493.2 liters / 17.42 cu.ft.Peak Diaphragm Displacement Volume (Vd): 796 ccMechanical Compliance of Suspension (Cms): 0.25 mm/NBL Product (BL): 18.9 T-MDiaphragm Mass Inc. Airload (MMs): 128 gramsEfficiency Bandwidth Product (EBP): 84Maximum Linear Excursion (Xmax): 6.7 mmSurface House of Cone (Sd): 1188 cm2Maximum Mechanical Restrict (Xlim): 15. mmMounting InformationRecommended Enclosure VolumeSealed: N/aVented: 85-297 liters / 3-10.5 cu.ft.Driving force Volume Displaced: 0.212 cu.ft. / 6.01 litersOverall Diameter: 18″, 457.2 mmBaffle Hole Diameter: 16.57″, 420.9 mmFront Sealing Gasket: YesRear Sealing Gasket: YesMounting Holes Diameter: 0.28″, 7.1mm Mounting Holes B.C.D.: 17.25″, 438.2mmDepth: 8.thirteen”, 206.5 mmNet Weight: 17 lbs, 7.71 kgShipping Weight: 20.5 lbs, 9.3 kgsMaterials of ConstructionCoil Construction: Copper voice coilCoil Former: Polyimide formerMagnet Composition: Ferrite magnetCore Main points: Vented and extended core Basket Materials: Die-forged aluminum basketCone Composition: Paper coneCone Edge Composition: Cloth cone edgeDust Cap Composition: Forged composition paper dust cap

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