Child soothing device with a low frequency sound chamber

A child soothing device (20) includes a frame (21) comprising a structural support, a housing (29) coupled to the structural support and comprising a cover (44, 46, 48) with an opening (104), and a speaker (40) including a speaker driver and a speaker chamber (100). The speaker driver has a diaphragm (102) disposed relative to the opening (104) in the cover for external sound wave propagation via displacement of the diaphragm (107), and the speaker chamber (100) has a volume defined by the housing and in communication with a diaphragm for internal sound wave propagation via the displacement of the diaphragm. The device further includes a partition (116, 118) within the housing to further define the volume of the speaker chamber. The volume may include a region obliquely oriented relative to the diaphragm to support a low frequency response of the speaker.