Dayton Audio DMA45-PR DMA Series Passive Radiator

Dayton Audio DMA45-PR 1-1/2″ DMA Series Passive Radiator OverviewDayton Audios DMA45-PR 1-1/2″ aluminum cone passive radiator allows you to tune small enclosures lower than using conventional ports. Matching the DMA45 drivers perfectly, this passive radiator is perfect for use in ultra-small designs like smart speakers, sound bars, and portable Bluetooth speakers. Product HighlightsPerfect match for the Dayton Audio DMA series driversAllows tuning small enclosures lower than using conventional portsRear mounted threaded post allows easy mass adjustment for custom tuningDIY friendly, oversized mounting flange makes installation simple Product Description:The DMA45-PR 1-1/2″ passive radiator from Dayton Audio is the perfect option for achieving low tuning frequencies from the smallest enclosure designs. This incredibly small passive radiator has all the features you would expect lager units including adjustable mass, aluminum cone, and rubber surround. Visually identical to Dayton Audios full-range DMA series drivers, the DMA45-PR can be used with any mini-speaker. The threaded rod and included wing nut on the back of the cone makes it easy to add mass to tune the radiator as needed for your projects. Whether you are building a smart speaker, sound bar, or portable Bluetooth speaker, the Dayton Audio DMA45-PR introduces a new range of possibilities. Specifications :Fs  60 HzVas 0.0092 cu. ft. (0.26 liters)Qms 2.75Cms  2.12 mm/NMms2.8 gRms   0.38 kg/sSd8.6 sq. cm.Xmech 5 mmDimensionsOverall diameter: 1.8″ x 1.8″, Cutout diameter: 1.56″, Depth: 1.35″.Tip: As a general rule, the passive radiator(s) should have at least double the displacement of air (Vd) as the active woofer(s)/subwoofer(s) in the system. To calculate Vd: Sd x Xmax = VdThiele-Small Parameters:Resonant Frequency (Fs)60HzMechanical Q (Qms)2.75Compliance Equivalent Volume (Vas)0.0092ft³Mechanical Compliance of Suspension (Cms)2.12mm/NMaximum Linear Excursion (Xmax)MmSurface Area of Cone (Sd)8.6cm²Product SpecificationsNominal Diameter2-1/2″Bolt Circle Diameter2Moving Mass Of Diaphragm (Mmd)2.8Materials of ConstructionCone MaterialAluminumSurround MaterialRubberBasket / Frame Material  PolymerMounting InformationOverall Outside Diameter1.8″ x 1.8″Baffle Cutout Diameter1.56″Depth   1.35″Dayton Audio DMA-45-PR Passive Radiator SpecificationsDayton Audio Manufacturer Warranty