Speaker+(Subwoofer)

[|subwoofer cone] =My Device= Speaker Subwoofertoc

[|Nice subwoofers]

Purpose
//What is the fundamental purpose of the device?Subwoofers are loudspeakers designed to generate low frequencies, or the bass of the accessible sound range.//

[|Low Frequency]

Energy
//What energy transformations are seen in its operation?// The lowest frequencies from your radio in your car transfer into your subwoofers vibrating cones or domes, to generate low frequency noise. Since low frequencies waves get longer as the sound gets deeper, subwoofers are designed to move a great distance.

=Controls= //What sensors/controls are designed into the device? To effectively produce high amplitude waveforms, the subwoofer must be connected to an amplifier(Some more about amplifiers). Because such signals require substantial electrical power behind them to control the cone movement, the highest power available is needed strictly for bass reproduction.//

[|Amplifier]

Materials
//What material(s) are essential to the device? Firm cone materials like Polypropylene, carbon and polymer laminates that preserve their shape under stress, resist moisture, and are very light, are essential for subwoofers.//

Science
//What is scientific principle is central to its operation?// First the waves from your radio are transfered into a amplifier, to maximize the amplitude of the waves enough to move the cones-domes in your subwoofers with long length frequency waves. Then the energy from the subwoofers are transfered into the air producing low frequency sounds. ([|How speakers work)]

Design
//What does a typical device look like?// Subwoofers are typically have a cone or dome shaped, that are housed in a box to achieve their maximum audio power.

[|car stereo syestem]

Evolution
//What changes have there been (or could there be) in this device?// Modifications in materials used for subwoofer cones and domes have been invented to provide a good material that is very elastic, however completely stationary, able to keep their shape regardless of the massive vibrations. [|(Some more info)]

[|Nice subwoofers] Related Devices

Competitors
//What other devices serve a similar purpose? Tweeters are the closest thing to subwoofers, doing the opposite task, of taking care of producing high instead of low frequency noise.

[|Dis is what dem tweeters look like]//

Partners
//What other devices work in conjunction with this device?// Amplifiers ([|How amplifiers work =P)], tweeters, bass reflex systems, dipole passive radiator enclosure ([|How bass reflex and dipole passive radiator enclosure systems work =P)]

[|Everything together =D]

Siblings
//What other devices use the same scientific principle?// Another device that is similar to subwoofers, are dome tweeters. Tweeters are designed to produce high frequency noises

[|High frequency]