4.5 cm (1.8") miniature loudspeaker with plastic membrane (Mylar) and metal basket. Small size, making it ideal for signal output in devices and equipment that have very little space available. - Rated power/music power: 1 W / 2 W - Impedance: 8 ohm - Transmission range (-10 dB): 300 - 14000 Hz - Mean sound pressure level: 83 dB (1 W/1 m) - Resonance frequency: 520 Hz - Upper pole plate height: 1.5 mm - Voice coil diameter: 14 mm - Winding height: 2.5 mm - Baffle opening: 41.5 mm - Net weight: 0.046 kg https://elecena.pl/product/18569725/2849-visaton-miniature-speaker-4-5-cm-8-ohm 2021-05-25 https://elecena.pl/product/18569725/2849-visaton-miniature-speaker-4-5-cm-8-ohm 2022-11-14