Abstract: A device for detachably securing the cover or a seat of a toilet against the front side of the tank includes a holder detachably securable to the tank and having a stem extending forwardly with a cover or seat engaging component on the distal end thereof. This component may be automatically engageable and disengageable with the cover or seat actuated by movement of the cover or seat, or alternatively, may be manually engageable or disengageable with the cover or seat.

Abstract: High quality single or multiple channel sound dispersal is obtained through the arrangement of a plurality of similar speakers divergently mounted in an airtight frame with integral horns formed therein such that the central axis of each speaker is coaxial with a line normal to and projected from the center of each face of a polyhedron characterized by the tetrahedron, the hexahedron, the octahedron, the dodecahedron and the icosahedron. When the speakers thus arranged are excited in phase, a series of infinite acoustic baffles are created between adjacent speakers creating a series of exponential horns which disperse the sound energy as if from a point source to the walls, ceiling and floor of the listening room and then by reflection to the listener. The frame/horn component is manufactured of universal parts.