Brooks HI FI projectors Current

The amount of electron charge passing a point in a conductor per unit of time.

Dynamic Mic
Robust type of microphone which picks up the sound on a diaphragm connected to a coil of wire which moves within a magnet. An alternating current is induced into the wire which provides the electrical output. Most dynamic mics have low output impedance of 200 Ohms. See Condenser Mic.

Brooks Hi Fi reviews Electret Condenser
A condenser microphone that has a permanently polarized (charged) variable capacitor as its sound pressure level sensor.

Electrostatic Charge
The excess or deficiency of electrons in a given area.

Brooks Hi Fi speakers Equalizer (Parametric, Graphic)
This is used to filter out and adjust specific frequencies in the PA. This is the part of the PA where you have the most control over the band's overall sound. It is also the number one weapon against feedback.

Gate
A dynamic processing device that turns a channel off or down when the signal drops below a certain level.

Instrument Amplifier
A device that has a power amplifier and speaker in a case (or in separate cases) to reproduce the signal put out by an electric instrument (such as an electric guitar) and to allow the instrument to be heard.

Clock Signal
The signal put out by a circuit that generates steady even pulses or steady codes used for synchronization.