Introducing the Dayton Audio DMA45-PR Passive Radiator

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 from larger units, including adjustable mass, aluminum cone, and rubber surround.

Designed for Small Enclosures

Visually identical to Dayton Audio's 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.

Unlock New Possibilities

Whether you are building a smart speaker, sound bar, or portable Bluetooth speaker, the Dayton Audio DMA45-PR introduces a new range of possibilities. With its compact design and adjustable mass, you can achieve low tuning frequencies from small enclosure designs, unlocking new possibilities for your projects.

Specifications

The DMA45-PR passive radiator comes with the following specifications: Fs: 60 Hz, Vas: 0.0092 ft³ (0.26 liters), Qms: 2.75, Cms: 2.12 mm/N, Mms: 2.8 g, Rms: 0.38 kg/s, Sd: 8.6 sq. cm, Xmech: 5 mm, Dimensions: Overall diameter: 1.8" x 1.8", Cutout diameter: 1.56", Depth: 1.35".

Tip for Achieving Optimal Performance

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