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Laser Diode - A semiconductor device which emits a laser beam.
LED - Light emitting diode.
Linearity Error - The deviation in response from an expected or theoretical
straight line value for instruments and transducers (speakers).
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.
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 recieved with a higher image rejection. When
switched to distance (DX), the weaker, distant stations are recieved 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 electroacoustic 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 whenan 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.
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