Specification AudioDriverSize : 6.5 inches AudioDriverType : dynamic_driver AudioOutputMode : Mono BluetoothRange : 30 feet Brand : Rockville BulletPoint1 : Pair of Rockville MS81 8” Commercial 70v/25V In-Ceiling Metal Speakers for background music and PA applications Metal housing is rugged, reliable, and blends in nicely with standard ceiling designs Easy-access volume knob allows you to tweak the power The knob is camouflaged into the center of the grille 8 Ohm transformer by-pass allows you to use this speaker for standard 8 ohm applications BulletPoint2 : These are the most common style of speakers for large retail stores, schools, and so many other applications Paper woofer cone is very sensitive allowing the speaker to play really loud even if you set the tap at only 0.5 watts The 8” cone moves a ton of air and gives this speaker a deeper bass response then 6.5” or 5.25” options BulletPoint3 : Dual cone driver allows these to play a full frequency range with increased sensitivity. For many commercial applications this can be much better then having a separate high frequency driver Steel grilles Frequency Response: 70Hz – 20KHz BulletPoint4 : Sensitivity: 90dB @ 1w / 1m Maximum SPL (Pax/1m) 100dB Magnet: 5oz Ferrite Dispersion @ 1000HZ: 120 degree conical Overall diameter: 12.51" BulletPoint5 : Mounting diameter: 10.98” Mounting depth: 3.5” Cut-out Diameter: 8” Weight: 2.7lbs each speaker Color: off-white BulletPoint6 : Item weight: 5.51 pounds Color : White CompatibleDevices : Smartphone, Tablet, Laptop CompatibleDevices1 : Home Theater CompatibleDevices2 : Smartphone CompatibleDevices3 : Tablet CompatibleDevices4 : MP3 Player CompatibleDevices5 : Laptop CompatibleDevices6 : Laptop CompatibleDevices7 : Gaming Console CompatibleDevices8 : Home Theater CompatibleWithVehicleType : Car ConnectivityProtocol : Bluetooth ConnectivityTechnology : RCA ConnectivityTechnology1 : Bluetooth ConnectivityTechnology2 : USB ConnectivityTechnology3 : Auxiliary ControllerType : Hand Control ControlMethod : application ExternallyAssignedProductIdentifier : 8715693322811 ExternallyAssignedProductIdentifier1 : 193802204568 ExternallyAssignedProductIdentifier2 : 0193802204568 FrequencyResponse : 20 KHz GpsrSafetyAttestation : 1 Hazmat : No aplicable Impedance : 8 ohm IncludedComponents : 4 speakers, 4 removable round speaker grills, 4 removable square speaker grills, speaker connection wire, Bluetooth control receiver, power supply IsWaterproof : FALSE ItemDisplayWeight : 2.5 kilograms ItemName : Rockville (24) MS81 Metal 8" 70v Commercial Background Music PA Ceiling Speakers ItemPackageDimensions_Height : 7.48 inches ItemPackageDimensions_Length : 13.77 inches ItemPackageDimensions_Width : 13.77 inches ItemPackageQuantity : 1 ItemTypeKeyword : ceiling-and-in-wall-home-speakers Manufacturer : Rockville Material : Plastic ModelName : (24) Rockville MS81 Metal 8" 70v Commercial Background Music PA Ceiling Speakers ModelNumber : (12) MS81 MountingType : Ceiling Mount NumberOfItems : 24 PackageLevel : unit PartNumber : (12) MS81 PowerSourceType : Corded Electric ProductDescription : Color: off-white. 5w. 2.5w. 1w. 0.5w. 5w. 2.5w. 1w. 0.5w. 0.25w. 20 Watts RMS The Rockville MS81 is a great choice for any restaurant, office, school, retail store, or any other commercial application. This speaker will sound great for all your PA announcements, and background music. The MS81 includes a metal housing which is strong and long-lasting. Also included is a tap switch on the front allowing you to instantly change the power without needing to remove the speaker! ProductSiteLaunchDate : 2021-04-22T16:13:36.643Z RecommendedUsesForProduct : music SeriesNumber : 40 SpeakerAmplificationType : Active SpeakerConnectivity : RCA SpeakerSize : 5.25 inches SpeakersMaximumOutputPower : 480 watts SpeakersNominalOutputPower : 5 watts SpeakerType : In-Ceiling SpecificUsesForProduct : Home audio systems, office audio systems, wireless music streaming, flush mounting on walls or ceilings Style : 5.25" -inch Speakers + Receiver Wall Mount SupplierDeclaredDgHzRegulation : not_applicable SurroundSoundChannelConfiguration : 1.0 Theme : music UnitCount : 24 UnspscCode : 52161512 WarrantyDescription : 90 days limited warranty WarrantyType : Limited Wattage : 100 watts WirelessCommunicationTechnology : Bluetooth