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

High Pass Filter - 300 Hz and 500 Hz

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.

Features:

• 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

Specifications:

• 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
• Power Requirement:GROUND-REFERENCED or FLOATING, 24 Vdc @ 30 mA
• Ambient Operating Environment:0 C to 55 C