Brooks Cinema XR 607 Far Field

The area from 3 feet away from the sound source up to the critical distance.

Line Input
An input designed to take a line level signal.

Brooks Speakers Input Impedance
The opposition to current flow by the first circuits of a device.

Feed
To send an audio or control signal to.

Brooks Cinema GT 845 Impedance Matching
Having or converting the output impedance of a device so that it matches the impedance of the input it will feed.

CD (Compact Disc) :
1) Digital sound storage medium. Provides a high quality source of music, sound effects etc. Also used as a playback medium for sound effects etc. by large theatres with long running shows, although CDR (Recordable CD) is becoming more affordable by the day.
2) An abbreviation of the term Compact Disc (a small optical disk with digital audio recorded on it).

Binary
A numbering system based on two. In binary there are two symbols used ("l" and "0").

AC
1) Abbreviation for alternating current.
2) An abbreviation of the term Alternating Current (electric current which flows back and forth in a circuit; all studio signals running through audio lines are AC).