Manufacturer Part Number: DMA70-PR
Dayton Audio's DMA70-PR 2-1/2" aluminum cone passive radiator allows you to tune small enclosures lower than possible using conventional ports. Matching the DMA series of drivers drivers perfectly, this passive radiator is perfect for use in ultra-small designs like smart speakers, sound bars, and portable Bluetooth speakers.
Key Features:
- Perfect match for the Dayton Audio DMA series drivers
- Allows tuning small enclosures lower than possible using conventional ports
- Rear mounted threaded post allows easy mass adjustment for custom tuning
- DIY friendly, oversized mounting flange makes installation simple
Dayton Audio DMA70-PR 2-1/2" DMA Series Passive Radiator The DMA70-PR 2-1/2" 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 Audio's full-range DMA series drivers, the DMA70-PR can also be used with any small driver that requires a low tuning frequency. 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 DMA70-PR introduces a new range of possibilities.
Specifications: Fs: 34.5 Hz Vas: 0.046 ft³ (1.32 liters) Qms: 3.86 Cms: 1.77 mm/N Mms: 12.0 g Rms: 1.49 kg/s Sd: 22.9 cm² Xmech: 7 mm Dimensions: Overall diameter: 2.75" x 2.75", Cutout diameter: 2.52", Depth: 1.73".
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 = Vd
Product Details
BrandDayton AudioModelDMA70-PRPart Number295-594UPC848791005626Unit of MeasureEachWeight0.2
Product Specifications
Nominal Diameter2-1/2"Bolt Circle Diameter3.25Moving Mass Of Diaphragm (Mmd)12.0
Thiele-Small Parameters
Resonant Frequency (Fs)34.5HzMechanical Q (Qms)3.86Compliance Equivalent Volume (Vas)0.046ft³Mechanical Compliance of Suspension (Cms)1.77mm/NMaximum Linear Excursion (Xmax)7mmSurface Area of Cone (Sd)22.9cm²
Materials of Construction
Cone MaterialAluminum
Mounting Information
Overall Outside Diameter2.75" x 2.75"Baffle Cutout Diameter2.52"Depth1.73"# Mounting Holes4
WARNING: 