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The acoustic spectrum of human hearing, generally regarded to be between 20Hz and 20 kHz.

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It is generally accepted that humans, on average, can hear audio frequencies varying from 20hz to 20,000hz. As we age the sensitivity to higher... [Read more]

03-28-2012 09:35 PM

A device that produces tones at specific frequencies for testing either equipment or entire systems.

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A person interested in sound reproduction. 

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Feature of a cassette player that ejects the tape when it has finished playing one side.

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Automatically provides low frequency boost for listening at low levels.

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A tuner feature that automatically finds the strongest stations in the local area, and places them in preset memories.

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Feature of a cassette player that automatically rewinds a tape when it has reached the end of one side, then begins to replay.

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Feature of a cassette player that automatically plays the reverse side of a tape when one side has reached the end.

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Feature of a cassette player that automatically shuts off power when a tape has reached the end of either side in any mode.

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A circuit that continuously adjusts the recording amplifier gain to maintain a relatively constant recording level.

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An input on the face or rear of the receiver that enables you to connect a plug-and-play satellite radio tuner or portable music player (CD, MP3, or... [Read more]

03-28-2012 09:35 PM

Acronym for Adaptive Woofer System, a trademark of ACI. An active woofer system with built in user adjustable equalization capabilities.

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The perpendicular alignment of the tape to the head of a tape player/recorder. Can be adjusted if audio/video signals are missing, distorted, or not... [Read more]

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Magnetic flux density in gap, in Tesla-meters.

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A separate battery added to a security system as an alternate power supply to serve as a backup in case the vehicle's main battery should be disabled... [Read more]

03-28-2012 09:35 PM

Sometimes used to describe a speaker cabinet, a baffle increases the low frequency response of a speaker by providing an acoustical seal to prevent... [Read more]

03-28-2012 09:35 PM

The relative volume level between two channels, usually the left and right channels. May also refer to the relative volume between front and rear... [Read more]

03-28-2012 09:35 PM

Refers to wiring. Audio signals require two wires. In an unbalanced line the shield is one of those wires. In a balanced line, there are two wires... [Read more]

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The strength or power to perform it's task extremely well without loss of performance even when pushed to its limits.

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A two-part filter that cuts both high and low frequencies, allowing the band of frequencies between these two points to pass.

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Type of enclosure used in sub-woofers where the driver is completely inside the enclosure and all the output emerges through a port. This... [Read more]

03-28-2012 09:35 PM

A circuit that permits a limited range (or band) of frequencies to pass through unattenuated.

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The range of frequency response between lower and upper frequency points that audio signals pass through an electrical device or conductor where the... [Read more]

03-28-2012 09:35 PM

A speaker magnet material made from an alloy with iron and barium for improved magnetic strength.