BNO Acoustics LK-61 Leakage

Sounds from other instruments and sources that were not intended to be picked up by the microphone.

Active/Inactive Microphones
Scientific definitions aside, active microphones generally sound better than inactive ones, but they generally cost more. They also require the use of either a battery or phantom power while inactive mics need only be plugged into the mic cord in order to work. In most playing situations, the subtle improvement in sound quality from an active mic isn't worth the extra cost and hassle. One possible exception it the headset mic. Put simply, inactive headset mics just plain suck. Active headset mics put out a much stronger signal and feed back much less.

BNO Acoustics GT-60 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).

Jam Sync
A generation of new SMPTE according to the input SMPTE signal

BNO Acoustics GK-3 Active Crossover
Uses active devices (transistors, IC's, tubes) and some form of power supply to operate.

Early Reflections
The first echoes in a room, caused by the sound from the sound source reflecting off one surface before reaching the listener.

Compression Driver
The unit that feeds a sound pressure wave into the throat of a horn (in a horn loudspeaker).

Delay
Outboard sound equipment that can momentarily stores a signal being sent to part of a P.A. system so that delayed reinforced sound reaches the audience at the same time as live sound from the stage.