Brooks GT 44 Active Crossover

Uses active devices (transistors, IC's, tubes) and some form of power supply to operate.

Level
The amount of signal strength; the amplitude, especially the average amplitude.

Brooks Cinema KP 30 Fidelity
The recording or reproduction quality.

Lead Sheet
A written chart showing the melody, lyrics and chords of a tune with full musical notation.

Brooks Cinema NZ 60 Amplifier
Sound equipment that converts the low voltage, low current signal from a tape deck, mixer etc. into a higher current signal suitable for driving speakers. See Power Amplifier, Crossover.

Amplitude
The height of a waveform above or below the zero line.

Hybrid
A product created by the marriage of two different technologies. Meant here as the combination of a dynamic woofer with an electrostatic transducer.

Figure Eight Pattern
Another name for Bi-directional Pattern (microphone pickup pattern picking up best from the front and back of the diaphragm and not picking up from the side of the diaphragm).