Abstract: An assembly for mounting a speaker to a surface includes a bracket having an elongated arcuate section and two end sections angled approximately perpendicular to the arcuate section. The end sections are attached on opposite sides of a speaker. A support device is provided, having a main body with a central channel, and channel guides running along each side of the central channel. The channel guides slidably retain the arcuate section of the bracket in the channel when the bracket is slid into the channel under the channel guides. A clamp is connected to the main body for clamping the bracket in place within the channel. A speaker can be mounted to the surface by attaching the bracket to the speaker, attaching the support device to the surface, sliding the bracket into the channel and moving the clamp to the locked position to lock the bracket in place.

Abstract: An assembly for mounting a speaker to a surface includes a bracket having an elongated arcuate section and two end sections angled approximately perpendicular to the arcuate section. The end sections are attached on opposite sides of a speaker. A support device is provided, having a main body with a central channel, and channel guides running along each side of the central channel. The channel guides slidably retain the arcuate section of the bracket in the channel when the bracket is slid into the channel under the channel guides. A clamp is connected to the main body for clamping the bracket in place within the channel. A speaker can be mounted to the surface by attaching the bracket to the speaker, attaching the support device to the surface, sliding the bracket into the channel and moving the clamp to the locked position to lock the bracket in place.

Abstract: A mounting bracket assembly has a stationary bracket to be mounted on a pole or other surface, and an adjustable bracket to be attached to the object to be mounted. The adjustable bracket is then positioned on the stationary bracket to mount the object on the surface or pole. The adjustable bracket is first mounted on the stationary bracket in a preliminary mounting position using integrated hooks and latches, and then can be easily adjusted to a permanent mounting position and secured with screws.

Abstract: A system for mounting a component in an aperture of a supporting surface has a mounting flange surrounding the component to be mounted, and at least two clamp dogs attached to the mounting flange and located adjacent a rear surface of the mounting flange. The component is inserted into a mounting hole cut in a sheet rock surface or ceiling tile, so that the flange abuts the front face of the surface. The clamping assemblies are located on the rear face of the surface. There is a pivoting system for pivoting the clamp dog around an axis. The pivoting system is operable from both the front surface and the rear surface of the mounting flange so that the clamp dogs can be actuated from either side of the sheet rock or ceiling tile.

Abstract: A system for mounting a component in an aperture of a supporting surface has a mounting flange surrounding the component to be mounted, and at least two clamp dogs attached to the mounting flange and located adjacent a rear surface of the mounting flange. The component is inserted into a mounting hole cut in a sheet rock surface or ceiling tile, so that the flange abuts the front face of the surface. The clamping assemblies are located on the rear face of the surface. There is a pivoting system for pivoting the clamp dog around an axis. The pivoting system is operable from both the front surface and the rear surface of the mounting flange so that the clamp dogs can be actuated from either side of the sheet rock or ceiling tile.

Abstract: The present invention is an expandable multi-zone paging and signaling system. In particular, the present invention is an apparatus and method for a paging controller wherein a user can program a response to a non-audio input signal in accordance with a set of prioritized inputs to a telephone interface device. The activity status of the set of prioritized inputs of the selected telephone interface device are combined using a logical OR function. By performing the logical OR function of the activity status of various telephone interface device inputs, the non-audio output signal can be customized to provide useful interactions with other outboard equipment.

Abstract: The present invention utilizes switching power amplifier technology to improve the performance of self-amplified speaker system. In contrast to analog Class A and Class AB amplifiers, the present invention utilizes a digital class D amplifier. Class D amplifiers are a pulse width modulated or digital switching amplifier configuration. The Class D amplifiers of the present invention includes 2-pole compensation feedback and power supply tracking that improves stability and total harmonic distortion over conventional power amplifiers. Class D amplifiers have an average electrical efficiency value of at least 65%. This level of electrical efficiency leads to reduction in the amount of power lost in the device or systems that result in heat generation.

Abstract: A speaker assembly comprising a speaker housing, a speaker mounted in the housing, and at least two threaded studs connected to the housing and speaker and extending away from the external surface of the housing. The studs have an unthreaded, pointed end that is particularly suitable for piercing a ceiling tile with little effort or mess. There are at least two nuts for threading over the studs to secure the studs to a ceiling tile after the studs pierce the tile to attach the housing to the tile, and at least two wire nuts to connect amplifier wires to the tip of the studs. The speaker is mounted to a ceiling tile by piercing the tile with the studs and securing the studs to the other side of the tile with the nuts. The amplifier wires are then connected to the tips of the studs via the wire nuts.

Abstract: A regulator system includes a circuit regulating the output of a power supply such as a capacitive input filter power supply and preferably also a transformer and full-wave diode bridge.

Abstract: A system and a method for connecting an on-hold audio device to a pager in a PBX system is disclosed. The system and method include digitally downloading messages from a server over a communication link to the on-hold device so that convenient and clear means for distributing new messages is provided. The server can also download updates to the operating system. The new apparatus preferably includes a microcontroller, flash memory, a data modem, DAA interface circuitry, audio processor circuitry and audio conditioning circuitry.