Brooks Speakers Compression Driver

The unit that feeds a sound pressure wave into the throat of a horn (in a horn loudspeaker).

Hard Disk (Hard Disc)
A storage unit for digital data that has rigid disks coated with magnetic material in a housing that includes the drive mechanism.

Brooks Cinema ZL 44 Frequency Range
The range of frequencies over which an electronic device is useful or over which a sound source will put out substantial energy.

Formant
An element in the sound of a voice or instrument that does not change frequency as different pitches are sounded.

Brooks KM 22 Action
In guitar playing, action refers to how far the strings sit off of the guitar neck. When strings are close to the neck, it is referred to as "Low Action". When the string sit far above the neck, it is called "High Action". Guitars with low action are easier to play, but make sure they are not too close, or it could causing buzzing.

Capacitance
The property of being able to oppose a change in voltage or store an electrical charge.

Crossover, Passive
Used inside of full range speaker cabinets to separate highs, mids, and lows and send them to their respective speakers within the each cabinet. These are not as efficient as active crossovers because they require all frequencies to draw from the same source of amplification.

Harmonic Distortion
The presence of harmonics in the output signal of a device which were not present in the input signal.