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[CrEaTrE]

L


Landline A telephone or telegraph circuit completed with wires.2

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Landline Interface The manner in which the cellular system ties into the regular telephone system.1

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Laser Amorphous Tape Head A tape head constructed from non-crystalline (Amorphous) material, cut into strips by a laser, for an accurate tape head gap. Features extended frequency response, and avoids becoming magnetized over time.2

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Last Door Arming A feature found on some security systems that enables the system to suspend itself from arming until the last door on the vehicle has been secured.2

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LCD Liquid Crystal Display.2

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LED(s) Light Emitting Diodes. A form of diode that sheds light. Used in many systems for indicator purposes.2

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Linear 1. Referring to mechanical movement, the ability of the voice coil to move in and out in the air gap without moving side-to-side. Non-linear movement can damage the voice coil.4
2. Referring to speaker response, the ability to maintain power or movement without loss of drive force.4
3. Referring to port operation, the relationship bewteen the amount of air moving through the port vs. the amount of air moved by the cone. Non-linear response in a port causes audible distortion.4

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Linearity In an audio device, the ability 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.4

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Listening Position A feature which can optimize frequency response and imaging for a particular position in a vehicle through the use of signal delay.1

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Load The resistance or impedance to which energy is being supplied. In amplifiers, the speaker or speakers connected to the output of the amplifier.4

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Loss The difference between potential energy output and actual energy output.4

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Loudness A signal processing feature which compensates for the human ear's deficiencies at various listening levels.1

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Loudspeaker An electro-acoustic transducer that converts electrical audio signals at its input to audible sound waves at its output.2

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Low Frequency Refers to radio frequencies within the 30-300 kHz band. In audio it usually refers to frequencies in the 40-160 Hz band.2

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Low Pass Filter A network of components which attenuate all frequencies above a predetermined frequency selected by the designer. Frequencies below cut-off are passed without any effect.2