The portion of the instrument which makes the vibrating source move more air or move air more efficiently; this makes the sound of the instrument louder. Examples of acoustic amplifiers include:
1) The body of an acoustic guitar,
2) The sounding board of a piano,
3) The bell of a horn and
4) The shell of a drum.
Frequency
Practically speaking, high frequency means high pitch and low frequency means low pitch.
Brooks VT-50 Balance Control
A control on a stereo amplifier that when moved clockwise will make the right channel louder (and the left channel softer) and will do the reverse when moved counter-clockwise.
Direct box
Used in line to convert a high impedance signal into a low impedance signal.
Brooks QS - 95 Bar
A term meaning the same thing as the term Measure (the grouping of a number of beats in music, most-often four beats).
Foot Switch
A switch placed on the floor and pressed by a musician to do various functions.
Bi
A prefix meaning two.
Fundamental
The tuned frequency and (almost always) the lowest frequency that is present in the sounding of a pitch by a musical instrument.
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