Derived from the Red Book standard, the specification contains details for the CD-ROM format, which including track requirements, error correction and more.
(See Red Book)

Tweeter - a speaker designed to reproduce the high or treble range of the sound spectrum.

Two-way - a type of speaker system composed of two ranges of speakers, usually a woofer and tweeter.

Voice coil - the wire wound around the speaker former. The former is mechanically connected to the speaker cone and causes the cone to vibrate in response to the audio current in the voice coil.

a unit of measurement used to measure how much "pressure" is used to force electricity through a circuit.

Watt - a unit of electrical power. A watt of electrical power is the use of one joule of energy per second. Watts of electrical power equals volts times amperes.

Whizzer - a small supplementary cone attached to the center of the speaker's main cone for the purpose of increasing high frequency response.

Woofer - a bass loudspeaker designed to reproduce low-frequency sound only. A woofer and subwoofer are usually the same type of loudspeaker, but their application (crossover frequency) differentiates them.

Phantom power: a method of powering condenser microphones by sending DC current (typically 9 to 52 volts) over the same mic cable that carries the audio signal.

In acoustics, the undesirable leakage of audio from loudspeakers, back into the same microphone which is being used for originally capturing the audio. If too much feedback occurs, the system can go into self-oscillation, causing unpleasant howling or squealing.