Product Review

Description:
Turn any surface/wall/table etc into a speaker with a surface transducer. This type of speaker does not have a moving cone like most speakers you've seen. Instead, a metal rod is wrapped with the voice coil. When current is pulsed through the coil, the magnetic field causes a piece of metal to expand and contract - and if it's pressed against a surface it turns the transducer into a speaker!
Often these size transducers are pressed up against a flat surface to turn it into a sounding board. The effect is a surprisingly clear sound that comes from the surface itself. The body of the transducer is heavy so that it can be placed with the rubber top down on a table. And for another fun trick, put the transducer at the end of a large plastic cup to point sound in a particular direction.
This transducer is about 45mm in diameter and has 4Ω impedance and should be run at about 5W
Dimensions:
Height: 27mm / 1"
Diameter: 45mm / 1.8"
Length of Wires: 120mm / 4.7"
Weight: 174g
Specs:
Impedance: 4Ω
Power rating: 5W