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SparkFun

$4.55 |
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A compact, thin speaker ideal for projects where space is tight. At just 28 mm in diameter and approximately 4 mm thick, it fits into enclosures and wearable...

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A compact, thin speaker ideal for projects where space is tight. At just 28 mm in diameter and approximately 4 mm thick, it fits into enclosures and wearables where standard speakers won't. The pre-wired 180 mm cable terminates in a 2-pin JST connector for easy hookup.

Key Features

  • 28mm Diameter – Compact form factor for tight spaces
  • ~4mm Thick – Ultra-slim profile
  • 2.5W Power Rating – Adequate volume for notifications and audio playback
  • 4 Ohm Impedance – Standard impedance for audio amplifier boards
  • JST Connector – 2-pin connector on ~180 mm cable for easy connection

Ideal For

  • Compact audio projects and wearables
  • Sound effects and notification systems
  • Arduino and Raspberry Pi audio output
  • Portable and embedded speaker applications

Package Contents

  • 1× Thin speaker (4 Ohm, 2.5W, 28 mm) with JST connector

Jargon buster

Plain-language definitions for the technical terms used above.

Impedance
Impedance is the total opposition a component or circuit presents to alternating current, measured in ohms, combining resistance with frequency-dependent reactance. It appears in many contexts, such as matching a speaker's impedance (for example 4 ohm or 8 ohm) to an amplifier or the input and output impedance of signal circuits, and a correct match helps avoid weak signals, distortion or damage.

Supplier page — sparkfun.com

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Related Tutorials

Free guides on learn.littlebird.com.au

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