BNO Acoustics GT-60: Short Delay

Delay times under 20 milliseconds.

Shelf
A frequency response of an equalization circuit where the boost or cut of frequencies forms a shelf on a frequency response graph. A High-Frequency Shelf control will affect signal levels at the set frequency and all frequencies higher than it; a Low-Frequency Shelf control will affect signal levels at the set frequency and all frequencies lower than it.

Soft Sound Source
A low-volume instrument such as an acoustic guitar.

BNO Acoustics Speakers: Sound Pressure Wave
Alternate compressions (compacting together) and rarefactions (spreading apart) of air particles moving away from something that is vibrating between 20 and 20,000 times a second or a similar occurrence in another substance (such as water).

BNO Acoustics LK-61: High Impedance
Impedance of 5000 or more ohms.

Mixdown (Mix Down)
Combining the signals from the tracks of a multitrack tape onto a master tape; reverberation/other effects may be also added.

BNO Acoustics SQ-9: Transport
The portion of a tape machine, which moves the tape from the supply reel, past the heads, to the take-up reel.