Brooks HI FI projectors Earth

The British version of the term Ground (In electronics, a place that has zero volts).

Generating Element
The portion of the microphone that actually converts the movement of the diaphragm into electrical current or voltage changes.

Brooks Hi Fi speakers Floppy Disk (Floppy Disc)
A round flat object (usually housed in a protective sleeve) coated with material that can be magnetized in a similar manner to tape.

Chamber
1) An Echo Chamber (a room designed with very hard, non-parallel surfaces equipped with a speaker and microphone so that when dry signals from the console are fed to the speaker, the microphone will have a reverberation of these signals that can be mixed in with the dry signals at the console).
2) A program in a delay/reverb effects device that simulates the sound of an Echo Chamber.

Brooks RM 909 Auxiliary Equipment
Effects devices separate from but working with the recording console.

Echo Send
The output of a console used to send a signal to an echo chamber or delay effects device.

Alternating Current
Electric current which flows back and forth in a circuit.

Impedance Matching
Having or converting the output impedance of a device so that it matches the impedance of the input it will feed.