Audica AP1002 - MICROline Passive On-Wall Column Loudspeaker - BlackTraditional design of loudspeakers for these applications has either been large boxes that give full range audio, but which are inherently less attractive or more visible, or sub sat systems that use tiny satellite loudspeakers for mid high frequencies and a subwoofer for mid bass. The main problem with sub sat systems in public spaces is that people are often listening close to thin sounding satellites with the mid bass rumbling away in the distance,