BNO Acoustics TS-10 Bottom

The bass frequencies (as in "needs more bottom end").

Ambience
The portion of the sound that comes from the surrounding environment rather than directly from the sound source.

BNO Acoustics XR-90 Fader
A control to control the gain of a channel on the console, thereby determining the level of the signal in that channel.

Gain Structure
The way in which the gain varies in the stages or sections of an audio system.

BNO Acoustics BP-40 Alternating Current
Electric current which flows back and forth in a circuit.

Compressor
1) Effect used to squash the sound together. Used properly, it can take the edge off or your sound. Used improperly, it can take the life right out of your system and make it sound like an MTV mix.
2) A piece of sound processing equipment that ensures all wanted signals are suitably placed between the noise and distortion levels of the recording medium. It evens out the unwanted changes in volume you get with close-miking, and in doing so, adds punch to the sound mix. A Limiter is used to stop a signal from exceeding a preset limit. Beyond this limit, the signal level will not increase, no matter how loud the input becomes. A Limiter is often used to protect speaker systems (and human ears) by preventing a system from becoming too loud.

Beats Per Minute BPM
The number of steady even pulses in music occurring in one minute and there fore defining the tempo of the song.

Buss (Bus)
A wire carrying signals to some place, usually fed from several sources.