Dayton Audio DMA45-4 1-1/2" Aluminum Cone Full-Range Driver

The Dayton Audio DMA45-4 is a compact 1-1/2" full-range driver that delivers remarkably clear and balanced audio from a diminutive footprint. Featuring a lightweight aluminium cone, this driver is engineered to produce articulate sound across the frequency spectrum, making it an excellent choice for designers seeking high-quality audio in space-constrained applications. Its small size and full-range capability make it particularly well-suited for portable Bluetooth speakers, desktop monitors, miniature soundbars, and other compact enclosure designs where traditional multi-driver setups are impractical.

Technically, the DMA45-4 offers a total Q factor (Qts) of 0.56, indicating a well-damped response suitable for small sealed or ported enclosures. The 4-ohm impedance (with a DC resistance of 3.7 ohms) and sensitivity of 82 dB SPL (1m/2.83V) ensure efficient power handling. A maximum linear excursion (Xmax) of 2 mm, combined with a copper voice coil wound on a former, provides robust performance within its size class. The driver’s mechanical (Qms 5.23) and electrical (Qes 0.62) Q factors contribute to controlled bass extension and smooth midrange reproduction. With a cut-out diameter of 39.9 mm and a mounting depth of just 25.9 mm, this driver integrates easily into tight spaces, offering a versatile solution for engineers and hobbyists alike.