We did initially discovered this speaker in the project "Pocket PiGRRL - Raspberry Pi Gameboy". The project includes a 28mm speaker producing a good audio playback and not requiring important room to store it. Perfect for creating a "portable game console", this speaker is also convenient in project where an audio feedback is suitable.
With 0.5w output, this speaket will be a nice add-ons to your portable project requiring some "correct" audio output without sacrifying too much place.
The 8 ohms impedance make it usable with many-many amplifier. You can easily wire it on an Arduino or Raspberry-Pi and the PAM8302 amplifier will do wnders (the PAM8302 is also very compact, convenient for Raspberry-Pi's based projects)
- 28 mm diametre
- Resonance Frequency (FO): 680 ±20% Hz at 1V
- Rated Impedance: 8 ±20% Ω (at 1KHz)
- Frequency Range: ~600-10KHz
- Rated Input Power: 0.25W
- Max Input Power: 0.5W
- Temperature Range: -20ºC ~ 55ºC
- Datasheet (pdf)