Editing Subwoofer (section)

====Aux-fed subwoofers====
Instead of being incorporated into a full-range system, concert subwoofers can be supplied with their own signal from a separate mix bus on the mixing console; often one of the auxiliary sends ("aux" or "auxes") is used. This configuration is called "aux-fed subwoofers", and has been observed to significantly reduce low-frequency "muddiness" that can build up in a concert sound system which has on stage a number of microphones each picking up low frequencies and each having different phase relationships of those low frequencies.<ref name="Young2008" /> The aux-fed subwoofers method greatly reduces the number of sources feeding the subwoofers to include only those instruments that have desired low-frequency information; sources such as [[Bass drum|kick drum]], [[bass guitar]], [[Sampler (musical instrument)|samplers]] and [[keyboard instrument]]s. This simplifies the signal sent to the subwoofers and makes for greater clarity and low punch.<ref name=Boomer /> Aux-fed subwoofers can even be stereo, if desired, using two auxiliary mix buses.