The Eminence Swamp Thang 150 Watt, 8 Ohm provides a thick and chunky tone with loads of sustain. The bottom end will hold up to even the most demanding drop-tune or 7 string players. SPECIFICATIONSNominal Basket Diameter: 12″, 305 mmNominal Impedance: 8 Watts: 150 WResonance: 97 HzUsable Frequency Range: 70 Hz – 4 kHzSensitivity: 102 dBMagnet Weight: 59 oz.Gap Height: 0.312″, 7.9 mmVoice Coil Diameter: 2″, 51 mm MOUNTING INFORMATIONRecommended Enclosure VolumeSealed: AcceptableVented: AcceptableDriver Volume Displaced: 0.079 cu.ft. / 2.25 litersOverall Diameter: 12.03″, 305.6 mmBaffle Hole Diameter: 11.07″, 281.2 mmFront Sealing Gasket: YesRear Sealing Gasket: YesMounting Holes Diameter: 0.25″, 6.4mmMounting Holes B.C.D: 11.59″, 294.4mmDepth: 5.2″, 132.1 mmNet Weight: 11.1 lbs, 5.03 kgShipping Weight: 12.8 lbs, 5.81 kgs MATERIALS OF CONSTRUCTIONCoil Construction: Copper voice coilCoil Former: Polyimide formerMagnet Composition: Ferrite magnetCore Details: Non-vented coreBasket Materials: Pressed steel basketCone Composition: Paper coneCone Edge Composition : Paper cone edgeDust Cap Composition: Zurette dust capIncludes original box.Product SpecsItem Number: 40029Make: EminenceModel: Swamp Thang 12″ 150W 8Condition: Very GoodFinish: BlackCategories: parts replacement-speakersMade In: United StatesMPN: 40029