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Mobile Electronics Glossary of Terms and Definitions - L

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Mobile Electronics Glossary - L
  L - Length of wire immersed in magnetic field, in meters
  Laser Diode - A semiconductor device which emits a laser beam.
  LCD - Liquid Crystal Display.
  Lces - The electrical inductive equivalent of Cms, in henries
  Le - "This is the voice coil inductance measured in millihenries (mH). The industry standard is to measure inductance at 1,000 Hz. As frequencies get higher there will be a rise in impedance above Re. This is because the voice coil is acting as an inductor. Consequently, the impedance of a speaker is not a fixed resistance, but can be represented as a curve that changes as the input frequency changes. Maximum impedance (Zmax) occurs at Fs. "
  LED - Light Emitting Diode.
  Line Level - The standard preamplifier output level of a signal from an audio source other than a turntable. Usually between 100mV and 1V, but may be as high as 5V or more from some preamplifiers.
  Linearity - In an audio device, the ability to accommodate the flow of the original source signal withuot distorting or altering it in any way. A component is linear if it accurately reproduces the source signal regardless of the signal's frequency.
  Linearity Error - The deviation in response from an expected or theoretical straight line value for instruments and transducers (speakers).
  Liquid Crystal Display (LCD) - A type of digital display made of a material that changes reflectance or transmittance when an electrical field is applied to it.
  Load - The electrical demand of a process, expressed in current (amps), power (watts), or resistance (ohms).
  Local / Distance Switch - Changes the sensitivity of the tuner. When switched to local (LO), the stronger local stations are received with a higher image rejection. When switched to distance (DX), the weaker, distant stations are received but with less image rejection.
  Loudness Control - Intended to boost low frequencies at lower volume levels and should not be used at high volume listening levels.
  Loudspeaker - An electro acoustic transducer which converts electrical audio signals at its input to audible waves at it's output. May also refer to a given driver of a multiple speaker system and not to the whole speaker system as might a speaker.
  Loudspeaker Compliance - The acoustical and mechanical equivalent of capacitance. Determines how easily a speaker cone/ voice coil assembly will move when an electrical signal is applied to it.
  Low Frequency Driver - A loudspeaker specifically designed to reproduce long, low-frequency wave lengths. The driver typically has a large cone, magnet structure, and voice coil. Woofer.
  Low Pass Filter - A network of elements used to attenuate all frequencies above a predetermined frequency. Frequencies below the cutoff point pass without any effect.
  Lows - Term which refers to a set of speaker components used to reproduce frequencies below 500 Hz as in a set of woofers. May also refer to the low frequency drivers of a set of separates. Not treble.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Mobile Electronics Basics:
Diodes
Glossary of Terms and Definitions
Ohm's Law
Recommended Books & DVD's
Recommended Wire Sizes
Relays
Resistors
Tools and Equipment


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