Brooks BA 71 Bi-Amplification

1) A way of optimizing the efficiency of a speaker system by separately amplifying the High Frequency (HF) and Low Frequency (LF) portions of the sound signal and sending them down two pairs of cables to the speaker. Multipin Speakon connectors have been developed to do this.
2)The process of having of having low-frequency speakers and high-frequency speakers driven by separate amplifiers.

Feedback Control
The control on a delay line or delay effects device that controls the amount of feedback.

Brooks Cinema TZ 505 Chip
1) A slang term with the same meaning as the term IC (a miniature circuit of many components that is in small, sealed housing with prongs to connect it into equipment).
2) The thread cut away from the master lacquer to make the groove, while disc recording.

Frequency Range
The range of frequencies over which an electronic device is useful or over which a sound source will put out substantial energy.

Brooks Speakers Electric Instrument
Any musical instrument that puts out an electrical signal rather than an acoustic sound.

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

Compander
1) A two section device that is used in noise reduction systems. The first section compresses the audio signal, before it is recorded, and the second section, expands the signal after recording.
2) In Yamaha brand digital consoles, a signal processing function that applies both compression and expansion to the same signal.

Assistant Engineer
A less elevated version of the term Second Engineer. Experienced seconds often place microphones, operate tape machines, break down equipment at the session end and keep the paperwork for the session.