Surface transducer ø40mm 4ohm 15W

Surface transducers give you the awesome power to turn almost any surface into a speaker. They're essentially just a speaker except instead of a cone, the coil is attached to a pad that conducts the vibration into whatever you press it against. Hook it up to an audio source and press it against the nearest table, wall or cardboard box.
* Impedance: 4ohm
* Power: 15W
* Dimensions: ø40.6mm x 23.6mm