Radio Design Labs ST-HP3 High Pass Filter – 300 Hz and 500 Hz

$173.08 $115.01

  • Horn Loudspeaker Protection
  • Low-Frequency Attenuation below 300 Hz
  • Low-Frequency Attenuation below 500 Hz
  • Line-Level Input and Outputs
  • Filtering Requiring no Field Adjustment
  • RDL® SupplyFlex™ Power Input Configuration
  • SKU: ST-HP3 Category:


    The ST-HP3 is the ideal choice where line-level audio filtering needs to be provided at the input of a power amplifier for protection of public address horns against damage from low frequencies.

    The ST-HP3 has one input and two filtered outputs: 300 Hz high pass and 500 Hz high pass. Both the input and output are balanced, and each may be wired unbalanced if required. The input accepts line-level (+4 dBu nominal) audio. The module operates at unity gain (balanced input and output). The two outputs may be used simultaneously.

    The ST-HP3 features RDL's SupplyFlex power input configuration for operation directly from ground-referenced, floating or bipolar 24 Vdc power.