I am looking for a speaker for an art installation. The speaker I used works with Arduino however it isn’t loud enough for a gallery (2W). Would you have any recommendations for a louder speaker (20W perhaps) that can be connected similarly (2 pins) or any amplifiers?
We used to have these SparkFun Audio Amplifier Kit - STA540 - SparkFun Electronics - you should be able to source something similar online
How much room can you spare?
The 28 mm speaker dimension is really small, coin-sized and you’re probably going to need to allow more dimensional space. Rich, room-filling sound is not going to be very easy or probably very good from an audio system, say, hidden inside a painting frame, table leg, or object plinth.
There are some tricks and exceptions like folded horns and DSP compression but, as the saying goes, there’s no replacement for displacement.
The little battery powered Bluetooth speakers really sound amazing but probably themselves use 50 mm drivers at least.
I recently got some new headphones that are 40 mm speakers each.
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Amplified computer speakers might work for your application. A computer or electronics store will carry them and often have some on display to try out.
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