Sound Reproduction Topic

A self-contained audio cart with signal generators, oscilloscope, microphone, and speaker for demonstrating waveforms, frequency, amplitude, harmonics, beat frequencies, and wave superposition. The oscilloscope can be projected via VGA for …

A DIY speaker built from a paper plate, magnets, and copper wire shows how alternating current through a voice coil drives mechanical vibrations. At low frequencies (12--15 Hz) the plate …

A speaker cut in half reveals the internal construction of a dynamic loudspeaker. Students see how the cone, suspension, voice coil, and magnet assembly work together to convert electrical signals …