Adafruit Mini Metal Speaker with Wires (8 ohm, 0.5 W)

This tiny 1" diameter speaker cone is the perfect addition to any small audio project where you need an 8 Ω impedance and will be using 0.5 W or less of power. It has a metal cone and is extremely lightweight. 

You can use it with Adafruit 2.5 W Class D Mono Amplifier (PAM8302) to achieve high sound quality. Just be careful not to overdrive it if you're using the class D amp breakouts as it can put 1.7W into the speaker and damage it. Start with lower volume and increase carefully.

Dimensions:

• Diameter: 28 mm / 1.1"
• Height: 4.5 mm
• Weight: 6 g

Details:

• Datasheet
• Resonance Frequency (FO): 680 ± 20% Hz at 1 V
• Rated Impedance: 8 ± 20% Ω (at 1 KHz)
• Frequency Range: ~ 600 - 10 KHz
• Rated Input Power: 0.25 W
• Max Input Power: 0.5 W
• Temperature Range: -20ºC ~ 55ºC