An adapter that takes a three prong power cord and plugs into a two prong outlet, used to disconnect the third (ground) pin of the power outlet. WARNING: It can be VERY DANGEROUS to have no ground connection to the case by using a ground lifter and not grounding the unit by other means.
Amplitude
The strength of a vibrating wave; in sound, the loudness of the sound.
Brooks Hi Fi reviews FOH (Front of House)
Refers to the speakers that face toward the audience. Also called the "main" speakers.
Chorus
Common type of effect that makes sounds fuller and thicker.
Brooks RM 909 Aux Send
Short for the term Auxiliary Send (a control to adjust the level of the signal sent from the console input channel to the auxiliary equipment through the aux buss.
Equal Loudness Contours
A drawing of several curves showing how loud the tones of different frequencies would have to be played for a person to say they were of equal loudness.
Feedback Control
The control on a delay line or delay effects device that controls the amount of feedback.
High Impedance
Impedance of 5000 or more ohms.
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