Description
Overview
A round micro speaker already seated in its own sound chamber, so the cone works against a fixed air volume. Six variants span 20 mm to 40 mm frames at 4 Ω or 8 Ω and 1 W or 2 W.
Specifications
- Frame diameters: 20, 26, 28, 30, 40 mm
- Impedance: 4 Ω or 8 Ω
- Rated power: 1 W or 2 W
- Form: round frame, enclosed rear chamber
- Variants: 20MM 8Ω2W, 26MM 4Ω1W, 28MM 8Ω1W, 30MM 8Ω1W, 40MM 4Ω2W, 40MM 8Ω2W
Purpose
Slim handheld housings have no room to mould a tuned chamber, leaving small drivers thin and buzzy. Supplying the cavity with the driver fixes back volume in a few millimetres of wall.
Applications
- Medical beauty instruments
- Smart home panels and doorbells
- Intercom handsets
- Toy and educational electronics
How to Use
- Check the panel opening against the frame diameter and the rear depth.
- Press the frame in flush and seal the gap with foam so the chamber stays airtight.
- Solder the leads with the same polarity on both drivers.
- Caution: stay within the 1 W or 2 W rating and match the 4 Ω or 8 Ω load, or the coil overheats.
- Raise level slowly and stop at the first rattle.
Need help specifying this connector?
Use our practical guides for current and wire selection, connector validation and OEM harness drawings.


































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