Dayton Audio CE40-20F-8 1-1/2" x 3/4" Mini Speaker

The Dayton Audio CE40-20F-8 is a compact 1-1/2" x 3/4" mini speaker designed to deliver clear, space-efficient audio for a variety of electronic projects. This micro driver is ideal for applications where size is at a premium, such as portable gadgets, alarm systems, small-scale audio installations, or custom DIY enclosures where a full-sized speaker cannot be accommodated. Its modest footprint makes it a versatile choice for hobbyists and engineers seeking to add sound output without compromising on design constraints.

Technically, this miniature speaker features a cloth surround for improved durability and sound quality, with an impedance of 8 ohms and a maximum power handling of 2 watts. The DC resistance measures 6.76 ohms, while the total Q factor (Qts) of 1.46 indicates a design suited for small, sealed enclosures. With a sensitivity of 76 dB SPL at 1 metre (2.83V) and an Xmax of 0.1 mm, it is optimised for efficient, clear reproduction at moderate volumes. The speaker’s dimensions are 39.9 mm by 19.8 mm, with a baffle cut-out diameter of 35.6 mm and four mounting holes for secure installation. Part of the Dayton Audio CE series, this driver offers reliable performance in a remarkably compact package, making it a practical addition to any project requiring unobtrusive audio output.