From A to Z mobile electronic terms defined in simple easy to understand description

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 • Sealed Enclosure or Air - Suspension - An enclosure that does not allow the back wave of the speaker to interfere with front wave, its completely sealed or isolated.

• Signal –A sequence of electrical radio waves received.   

• Sound – Vibrations of air detectable by the ear.

• Sound Pressure Level (SPL) – Pressure caused by sound waves, measured in decibels.  

• Speaker - A transducer which transforms electrical energy into sound.

• Stereophonic - Two or more audio channels in a car audio system producing clarity of sound.

• Sub-woofer - A loudspeaker that produces low audio frequencies, 30 Hz to 120 Hz.

• Super tweeter - A high frequency driver reproducing high frequencies, usually over 10 kHz.

• Switch – A device used to turn on or off an electrical component.