Brooks Cinema TX 509 Active Crossover

Uses active devices (transistors, IC's, tubes) and some form of power supply to operate.

Clean
Describes a distortion free sound with few effects.

Brooks Cinema Projectors Cycles Per Second
A unit used in the measure of frequency, equivalent to Hertz. Cycles Per Second is an outdated term replaced by Hertz in 1948.

Dynamic Mic
Robust type of microphone which picks up the sound on a diaphragm connected to a coil of wire which moves within a magnet. An alternating current is induced into the wire which provides the electrical output. Most dynamic mics have low output impedance of 200 Ohms. See Condenser Mic.

Brooks QS 70 Hard Disk Recording
The recording of digital audio onto a hard disc.

Echo Send
The output of a console used to send a signal to an echo chamber or delay effects device.

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

Equal Loudness Contours
A drawing of several curves showing how loud the tones of different frequencies would have to be played for a person to say they were of equal loudness.