Check it out the top sales 40mm audio speaker from Xiamen Soundbuzzer

Hear the good news! This 40mm speaker is a great addition to any audio project where you need a 4 Ohm impedance and 3W or less of power.

At 40mm diameter it has a more square-ish shape, but a smaller face. Sound quality and volume are nicely sandwiched between our Thin Plastic Speaker with Wires and the honkin’ 20W 4 Ohm Full Range Speaker.

Here is the link to view more:

https://www.soundbuzzer.com/good-sound-nd-fe-b-magnet-raw-audio-speaker-40mm-4ohm-3w-speaker-unit.html