Brooks RM 909 Dry

Describes a sound coming from the PA with no effects on it.

Coincident Microphones (Coincident Pair)
Two microphones whose heads are placed as lose as possible to each other so that the path length from any sound source to either microphone is for all practical purposes, the same.

Brooks HI FI projectors Capacitance
The property of being able to oppose a change in voltage or store an electrical charge.

Hybrid
A product created by the marriage of two different technologies. Meant here as the combination of a dynamic woofer with an electrostatic transducer.

Brooks Hi Fi speakers Attack
The rate the sound begins and increases in volume.

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

Electric Current
A more formal term meaning the same as the term Current (the amount of electron charge passing a point in a conductor per unit of time).

Acoustic Echo Chamber
A room designed with very hard, non-parallel surfaces and equipped with a speaker and microphone; dry signals from the console are fed to the speaker and the microphone will have a reverberation of these signals that can be mixed in with the dry signals at the console.