Providing Pattern Control: Rent Com Inc: Audio Visual, Video, Projection, Presentation Rental AV Equipment

Providing Pattern Control

Once a high level of efficiency and acoustic power have been achieved from a transducer, the next design problem becomes delivering that acoustic power to the audience. This is accomplished by confining the acoustic energy to a defined unit of area, via a pattern control device, such as a horn. Our attention now shifts back to the wavelength problem that we discussed earlier. Sound waves have a physical size, which is inversely proportion to frequency. Since our midrange device is reproducing a lower frequency than a conventional 1" or 2" driver, the associated horn must be much larger to allow pattern control.

The PC1500 series horns are designed to channel the immense acoustic output of M4 to a defined area, the audience. This provides increased direct sound level for listeners, and reduces energy delivered to the reverberant sound field. Directivity control, or "Q", is one of the most valuable tools available to the system designer, often allowing for sound system solutions to room problems. Maintaining dispersion control down to 250Hz may tame an otherwise hostile acoustic environment. The clever system designer will utilize the absorption of an audience along with well defined coverage patterns to reduce excitation of a very reverberant space, making both intelligible speech and natural music reproduction possible.