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Paging Horn Crossover & Limiter


The TSD-HF11 is specifically designed 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.

Unit requires Power Supply that is sold separately for proper function, multiple TSDs can be powered with one power supply based on current requirements. This unit has a power requirement of 60mA so any of the available power supplies can be used with this unit. For multiple TSD applications use the TSD Power Calculator to determine the proper power supply needed.


  • Selectable Hi-Pass and Lo-Pass Filter
  • Balance and Unbalance Inputs
  • Input and Output Trim Controls
  • Variable Limiter
  • Security Covers Included for All Front Panel Controls
  • Output Signal, Peak & Limit Indicator LEDs
  • Removable Phoenix Style I/O Connectors
  • Power Supply Sold Separately
  • Optional Rack Mount Kit – TDS-RMK
  • Optional Half Rack Mount Kit – TDS-HRMK
  • Optional Rear Rack Mount Kit – TDS-RRMK


Line Input Impedance 10kΩ
Input Level 500mV (-6dB) Balanced
Input Level 316mV (-10dB) Unbalanced
THD .2% @ 1kHz
Frequency Response 20Hz - 15kHz
Hi Cut Filter 15kHz 18dB / Octave (Fixed)
Low Cut Filter 200Hz, 300Hz, & 400Hz @ 18dB / Octave (Dip Switch Selectable)
24VDC Power Requirements 60mA
Height 1 1/2" (38mm)
Width 4" (101mm)
Depth 2 1/2" (63.5mm)


Manuals & Technical Documents

SpecificationAtlas Audio-TSD-HF11-Spec Sheet.pdf