The TSD-HF11 by Atlas Sound is specifically designed for use with paging horns in applications where band pass filter and power limiting are required. The TSD-HF11 has a 1 Input and 1 Output configuration and includes Input and Output trim controls, selectable Hi-Pass filter, and a variable limiter to prevent excess signal from entering the amplifier. The TSD-HF11 can be used with a variety of paging horns and amplifiers as its full feature set allows individualized customization based on system requirements.