Look up: Sub-bass

1. Sub Bass
   Frequencies below the range of typical monitor loudspeakers. Some define sub-bass as frequencies that can be felt rather than heard. Bass frequencies which are below the point where sound is directional (@ 150Hertz) and above the point where it can no longer be heard (@20 Hertz). below this, it is k...
   Found on http://www.traditionalmusic.co.uk/music%
   
   
2. Sub-bass
   That part of a speaker system designed to extend the low frequency range of the system.
   Found on http://www.testing1212.co.uk/a.htm
   
   
3. Sub-bass
   Sub'-bass` noun (Mus.) The deepest pedal stop, or the lowest tones of an organ; the fundamental or ground bass. [ Written also sub-base .] Ayliffe.
   Found on http://www.encyclo.co.uk/webster/S/220
   
   
4. Sub-bass
   • (n.) The deepest pedal stop, or the lowest tones of an organ; the fundamental or ground bass.
   Found on http://thinkexist.com/dictionary/meaning
   
   
5. Sub-bass
   `Sub-bass` is a term used to describe audible sounds below 90 Hz and extending downward to include the lowest frequency humans can hear, typically 20 Hz. Sound systems often feature one or more subwoofer loudspeakers that are dedicated solely to amplifying sounds in the sub-bass ra...
   Found on http://en.wikipedia.org/wiki/Sub-bass