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Specification
AgeRangeDescription : Adult
AssemblyInstructions : DIY
AudioDriverSize : 6.5 inches
AudioDriverType : dynamic_driver
AudioOutputMode : 单声道
BluetoothRange : 10 meters
Brand : Granvela
BulletPoint1 : High performance: Enhanced Sound,Low distortion Rate and Extended range with quality strong performance. Ideal for DIY bookshelf speakers or bluetooth multimedia computer speakers.
BulletPoint2 : Features: The MR3AT19R is equipped with a 0.75″ copper voice coil and offers 83 dB sensitivity for clear, bright sound. Its broad 120 Hz–5 kHz frequency range ensures strong performance with low distortion. Durable steel chassis and high-quality materials ensure reliable and long-lasting performance
BulletPoint3 : Main Parameters and Specifications: Rms power: 15 W, Max power: 30 W, Nominal impedance: 4 Ω ±15%, Sensitivity: 83 dB ±2dB, Nominal diameter: φ92x45 mm, Cone Material: paper,Magnet material: Ferrite
BulletPoint4 : Applications: Ideal for reproducing human vocals, watching movies, and enjoying pop music. A choice for DIY home audio speakers,gaming setups, live Streaming, Computer multimedia audio system, home theaters,, and office audio systems.
BulletPoint5 : In the package: 2 speaker drivers, 8 installation srews.1 Year Warranty.
Color : Black
CompatibleDevices : Laptop, Desktop
CompatibleDevices1 : Smartphone
CompatibleDevices2 : Tablet
CompatibleDevices3 : MP3 Player
CompatibleDevices4 : Laptop
CompatibleDevices5 : Desktop
CompatibleDevices6 : Television
CompatibleWithVehicleType : Car
ConnectivityProtocol : wired
ConnectivityTechnology : Bluetooth
ConnectivityTechnology1 : Bluetooth
ConnectivityTechnology2 : Optical
ConnectivityTechnology3 : RCA
ControllerType : 触控板控制
ControlMethod : touch
CustomerPackageType : FFP
ExternallyAssignedProductIdentifier1 : 703341208325
ExternallyAssignedProductIdentifier2 : 0703341208325
ExternallyAssignedProductIdentifier3 : 00852225007025
FrequencyResponse : 120.5 hertz
Impedance : 4 ohm
IncludedComponents : Screws
IndoorOutdoorUsage : indoor
IsWaterproof : FALSE
ItemName : Granvela 3 inch Wide Range Speaker Drivers for DIY Bookshelf and Multimedia Speakers - 20W/4 Ohm (2 Pack)
ItemPackageDimensions_Height : 24.003 centimeters
ItemPackageDimensions_Length : 6.7056 centimeters
ItemPackageDimensions_Width : 12.2936 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : bookshelf-home-speakers
Manufacturer : Granvela
Material : MDF Wood
ModelName : MR3AT19R
ModelNumber : MR3AT19R
MountingType : Tabletop Mount
NumberOfCircuits : 1
NumberOfItems : 2
NumberOfPowerLevels : 1
PackageLevel : unit
PartNumber : 12d54a46-a33d-4b09-8dad-86b99255bfd1
PowerSourceType : Corded Electric
ProcessorCount : 1
ProductDescription : Hi-Fi Speakes for DIY home audio speakers ,gaming set-up, computer speakers , car speakers ,or near-field monitor speakers .

Specifications
Size : 3 inch
Shape: Round
Outside Diameter: 92mm
Installation holes distance: 84mm
Opening Hole for Speaker ：73mm
Magnet Diameters： 70mm
Height of speaker：47mm
Paramerts:
Rms power: 15 W,
Max power: 30 W,
Nominal impedance: 4 Ω ±15%, Minimum impedance: 3.6 Ω ±15%,
Resonance frequency (Fs): 120 Hz ±15%, Sensitivity (2.83V/1m): 83 dB ±2dB, Diaphragm area (Sd): 28.2 cm²,
Force factor (BxL): 3.34 N/A, Mechanical Q-factor (Qms): 2.097, Electrical Q-factor (Qes): 0.84, Total Q-factor (Qts): 0.6, Equivalent air volume (Vas): 0.637 Ltr,
Compliance (Cms): 562.1 uM/N, Moving mass (Mms): 3.1 g, Efficiency (Eta & No): 0.129 %,
Frequency range: 120 Hz～5 kHz, Buzz & rattle test: 7.7V 100Hz～5kHz
Nominal diameter: φ92x45 mm, Chassis material: Steel, Dust cap material: Paper, Cone material: Paper,
Surround material: Rubber, Magnet material: Ferrite, Magnet dimensions (ODxIDxH): φ70xφ25x15 mm,
Thickn.Washer (ODxIDxH): φ65x4xφ20.9 mm, Thickn.Poleplate (ODxIDxH): φ65x4xφ18.9 mm, Thickn.Poleplate Vent ID: mm,
Voice coil diameter: 19.45 mm, Voice coil layer: 2 L, Voice coil winding height: 9 mm, Voice coil line material: Copper,
Voice coil former material: Aluminum, Xmax: 2.5 mm, Air Gap width: 1 mm

In the package: 2 (1 pair) speaker drivers, 8 installation srews.
ProductSiteLaunchDate : 2021-07-28T07:56:05.836Z
RecommendedUsesForProduct : For Computers
SeriesNumber : 6
SignalToNoiseRatio : 95 decibels
SpeakerAmplificationType : Active
SpeakerConnectivity : Wired
SpeakerSize : 3 inches
SpeakersMaximumOutputPower : 30 watts
SpeakersNominalOutputPower : 20 watts
SpeakerType : Bookshelf
SpeakerType1 : Woofer
SpeakerType2 : Bookshelf
SpeakerType3 : Surround Sound
SpecificUsesForProduct : Music playback, home theaters, and audio systems
SupplierDeclaredDgHzRegulation : not_applicable
SurroundSoundChannelConfiguration : 2.0
TargetGender : unisex
UnitCount : 2
UnspscCode : 43211607
WarrantyDescription : 2 Year Full Manufacturer's Direct Warranty
WarrantyType : Limited
Wattage : 20 watts
WirelessCommunicationTechnology : Bluetooth