Brooks RM 909 Headstock

The area of the guitar at the end of the neck where the strings are tuned.

Instrument Out Direct
Feeding the output of an electric instrument (like an electric guitar) to the recording console or tape recorder without using a microphone.

Brooks Hi Fi speakers Amplitude
The extreme range of a signal. Usually measured from the average to the extreme.

Corner Frequency
Same as Cut-Off Frequency (the highest or lowest frequency in the pass band of a filter). (NOUN)

Brooks RM 909 reviews In
Short For "in the circuit," in other words "active."

Cycle
1) An alternation of a waveform which begins at a point, passes through the zero line, and ends at a point with the same value and moving in the same direction as the starting point.
2) On a Solid State Logic Console, a command to have the console computer control the tape machine to play and replay a certain section of the tape.

Format
1) The number of tracks, their width, spacing and order for tape recording.
2) To prepare a digital storage medium so that it will accept and store digital information bits.

Humbucker
Pickups that are coupled together to get a certain sound.