Sub loudspeakers are often mounted on the floor, and for good reason. Sub 6 and Sub 10 are particularly suitable for placing discreetly under banquette seating. Floor mounting increases low-frequency efficiency due to the acoustic energy being reflected from the plane of the floor. The proximity of the cabinet to the floor, and the fact that low-frequency sound waves are long, means that the reflected energy couples with the direct output without cancellation, adding the acoustic power back to the wavefronts rather than it dispersing or reflecting back from more distant surfaces and causing cancellation.
Sub can also be mounted on a wall or suspended from a ceiling using the dedicated Sub Brackets, or M8 eyebolts and steel wire rope. These are available separately as Optimal Audio accessories. Be sure to connect up before mounting against a wall!
Sub Brackets
It is critical that the structure to which Sub is to be mounted is suitable for taking the weight of the loudspeaker/bracket assembly. It is highly recommended that a secondary safety fixing be fitted. This can be achieved using a suitable rated eyebolt and rated safety chain or steel wire rope fixed to an M8 eyebolt screwed into one of the M8 fittings.
M8 eyebolt fittings