IKEA Speaker Teardown
Background and Identification
IKEA is a Swedish multinational company that designs and sells ready-to-assemble furniture, home accessories, and kitchen appliances, in addition to other goods and home services. IKEA was founded in 1943 in Sweden by Ingvar Kamprad. Since 2008, IKEA has been the world’s largest furniture retailer.
A speaker is a device that produces sound waves from an electrical audio signal. The speaker takes this input waveform and runs it through a coil of wires suspended between permanent magnets, which causes vibrations with those same waveforms in the air. Since the diaphragm, which is attached to the coil and pushes on the air to create the actual sound waves, is optimized for a certain range of frequencies, most complete sound systems will use multiple drivers to get accuracy across the full range of sounds we would want to produce.
Speakers can be identified by their design, which remains largely unchanged from their early 1900’s origins. Speakers will have a conical diaphragm used to produce the sound, often made from a lightweight yet rigid material that is also well damped, to prevent sound waves from being produced after the signal stops. Common materials used are paper, plastic, and metal. In smaller applications like computer speakers, the diaphragm shape sometimes differs from the traditional cone, often taking on an ovoid shape. However, the concepts used to produce sound are the same.