Abstract: An apparatus (100), including: a speaker (152, 154); a baffle (104) surrounding the speaker; and a dispersion cone (106) positioned forward of, aligned with, and pointing toward the speaker and having a dispersion surface (120) with: a dispersion surface central section (122); a dispersion surface surrounding section (124) therearound; and a transition (126) therebetween. From a tip (122T) of the dispersion cone outward the dispersion surface central section defines a concave cross-sectional shape (170), the dispersion surface surrounding section defines a less concave cross-sectional shape (172) than the concave cross-sectional shape of the dispersion surface central section, and the transition comprises an inflection point (124IP). A distance of each section of the dispersion surface forward of the speaker progressively increases with increasing radial distance from a radial center of the dispersion surface.

Abstract: Boat towers having a lower portion fixed to a boat, an upper portion pivotally coupled to the lower portion, and a hinge configured to couple the upper portion to the lower portion are disclosed. The hinge may include a stationary portion coupled to the lower portion of the tower; a moving portion coupled to the lower portion at a hinge axis; an assisting device extending from a position fixed on the stationary portion to an interface on the moving portion; a catch coupled to the moving portion; and a latch coupled to the stationary portion configured to interface with the catch thereby locking the hinge in a closed position. The latch may be configured to move to a locked position by the moving portion moving into the closed position and the weight of the upper portion of the tower provides sufficient force to engage and lock the latch.