Brooks XS - 45 reviews Critical Distance

The point a distance away from the sound source where the direct sound and the reverberant sound are equal in volume.

Input Monitor
A switch position and operational mode of the electronics of a tape machine where the signal at output of the electronics will be the same as the signal coming into the electronics. In this mode, the tape machine's meter will read the input signal.

Brooks VT-50 reviews Impedance
1) A term for the electrical resistance found in a/c circuits. Affects the ability of a cable to transmit low level (e.g. sound) signals over a long distance. Measured in Ohms. Speakers are rated according to power handling capabilities (Watts, W) and impedance (Ohms).
2) The total opposition offered by an electric circuit to the flow of an alternating current of a single frequency. It is a combination of resistance and reactance and is measured in ohms. Remember that a speaker's impedance changes with frequency, it is not a constant value.
3) The opposition to alternating current.

Insulator
A substance such as glass, air, plastic, etc., that will (for all practical purposes) not conduct electricity.

BROOKS AUDIO DESIGN reviews Analog Recording
A recording of the continuous changes of an audio waveform.

Group Faders
The VCA faders of individual channels that are all controlled by a Group Master Fader (a slide control used to send out a control voltage to several VCA faders in individual channels).

Infinite Baffle
A baffle so large that the sounds coming from one side do not reach the other side.

Lift
1) To boost gain of audio at a particular band of frequencies with an equalizer.
2) An elevation device in the star trek series of TV programs.