Brooks RM 909 reviews In-Line Console

A console with modules that have controls for all console sections in one long strip.

Isolation
A containing of the sound wave in a certain area so that it will not leak into other areas and/or unintended mics.

Brooks RM 909 Head
1) In tape recording, the transducer (energy converter) that changes the audio energy from electrical energy to magnetic energy and back; also the devices that apply magnetism to the recording tape for other purposes such as in the erase head.
2) The part of a device that immediately includes the transducer to change sound or audio signals from one energy form to another.

Echo Return
An input of the console, which brings back the echo (reverberation) signal from the echo chamber or other echo effects device.

Brooks HI FI projectors Fletcher Munson Effect
A hearing limitation shown by Fletcher Munson Equal Loudness Contours (as music is lowered in volume, it is much more difficult to hear bass frequencies and somewhat harder to hear very high frequencies).

Hum
The 60 Hz power line current accidentally induced or fed into electronic equipment.

Expander
A device that causes expansion of the audio signal.

Insert
1) A punch in of the all of the tracks being recorded in a recording session.
2) On Solid State Logic consoles, placing an outboard piece of gear in the channel by patching and activating a switch.