Brooks RM 909 First Generation

A descriptive term meaning original (as opposed to a copy).

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

Brooks HI FI projectors Balanced input/output
A "balanced" connection is one that has three wires to move the signal. One is a ground, and the other two (called conductors) carry signals of equal value. This is why they are called balanced. Low Z cables and connections are the most common example.

Limiter
A device which reduces gain when the input voltage exceeds a certain level.

Brooks Hi Fi reviews IM Distortion
An abbreviation of the term Intermodulation Distortion (Distortion caused by one signal beating with another signal and producing frequencies that are both the sum and the difference of the original frequencies present).

Bar
A term meaning the same thing as the term Measure (the grouping of a number of beats in music, most-often four beats).

Crossover
1) A route leading from one side of the stage to the other, out of the audiences view.
2) An electronic filter in a sound system that routes sound of the correct frequency to the correct part of the speaker system. Different speakers handle high frequencies (tweeters) and low frequencies (woofers). Sometimes known as a crossover network. An active crossover splits the signal from the mixing desk into high, mid and low frequencies which are then sent to three separate amplifiers.
3) An electrical circuit that divides a full bandwidth signal into the desired frequency bands for the loudspeaker components.

Jack Bay
A series of jacks which have connections for most of the inputs and outputs of the equipment in the control room.