Precision Audio and AV Interface Products

Radio Design Labs

ST-HP3 High Pass Filter - 300 Hz and 500 Hz

  • 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
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

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.

Applications

Input:
20 kΩ balanced line level (+4 dBu)
Outputs (2):
150 Ω balanced line level (+4 dBu)
Headroom:
> 18 dB
Attenuation Curve:
18 dB/octave
THD+N:
< 0.01%
Residual Noise:
< 90 dB (referred to +4 dBu)
Insertion Loss:
< 2 dB
300 Hz Output:
Frequency Response: 300 Hz to 30 kHz (± 0.5 dB); -3 dB Frequency: 225 Hz
500 Hz Output
Frequency Response: 500 Hz to 30 kHz (± 1.0 dB); -3 dB Frequency: 450 Hz
Ambient Operating Environment:
0° C to 55° C
Power Requirement:
GROUND-REFERENCED or FLOATING, 24 Vdc @ 30 mA
Dimensions:
Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
Package Type:
Cardboard Box
Package Dimensions:
2 x 2 x 4 in.
Shipping Weight:
0.19 lbs.
WEEE weight:
0.14 lbs.
Tariff code:
8543.70.9860

Documents:
Format
PDF
CAD Files:
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High Res Images:
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Declaration of Conformity:
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A&E Specifications:
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ST-HP3 ST-HP3