Manufacturer Part Number: SDT4K-RE8Fourjay SDT4K-RE8 8" Ceiling Speaker Assembly with Volume ControlFactory assembled and pre-tested to pass the highest quality standards. The SDT4K-RE8 utilizes a corrosion resistant, 22 gauge galvanized steel grill with ceiling powder coated non-glare finish, which meets UL 1480 baffle requirements. It has an impedance of 8 ohms and is rated at 15 watts. The SDT4K-RE8 is fitted with a 25/70 volt transformer and a recessed 50 ohm volume control. 12-1/2" overall diameter.Speaker Model #Q88D10Transformer Model T427Size & Style8" RoundPower Rating4 WattsMagnet Weight & Type10 oz. CeramicPrimary Voltage25 & 70Speaker TypeDual ConeInsertion Loss @ 1 KHz0.9 dBPower Rating25 WattsFrequency Response80-20,000 HzSensitivity100 dBPrimary Taps4, 2, 1, 1/2 WattsResponse30-19,000 HzPrimary Leads6" Color CodedImpedance8 OhmsSecondary Impedance8 OhmsCoil Diameter1"Secondary Leads6" Color CodedDepth2-7/8"Mounting Centers2"Weight2.1 Lbs.Weight0.42 Lbs.2001 Parts Express. All Rights ReservedProduct SpecificationsInput Rating: 8 ohm, 70V, 25VMounting Style: In-ceilingSpecial Features: UL1480, Volume ControlWoofer Diameter: 8"Fourjay SDT4K-RE8 8" Ceiling Speaker Assembly with Volume ControlBrand: Fourjay IndustriesModel: SDT4K-RE8Part Number: 300-354UPC: 844632007538Product Category: In-Ceiling / On-Ceiling SpeakersUnit of Measure: EAWeight: 4.6596 lbs. NOTE: International/PO BOX deliveries are not available.The item can't be shipped to AF, AA, AC, AE, AM, AP, HI, AK, PR in the Unite States.