Trident
Trident 500 Series Tracking Filters
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Trident 500 Series Tracking Filters is a bandpass filter module in 500 Series format, designed for use in the recording chain as a pre-conversion band-shaping tool. High-pass and low-pass filters with adjustable cutoff frequencies allow unwanted spectral content to be removed directly in the signal path before the signal reaches the converter and is committed to tape or DAW track.
Filtering at the recording stage — committing before conversion
Applying filters during tracking rather than at mixdown is a deliberate operational choice with concrete sonic consequences. Rolling off low-frequency content below a source's useful range before conversion removes energy that would otherwise consume converter headroom and complicate later mix decisions. A low-pass filter limiting the upper band reduces high-frequency noise and RF interference that can enter the signal path in complex studio installations with multiple pieces of powered equipment in close proximity. In 500 Series format the module integrates directly into existing rack infrastructure — no external power supply, no additional signal wiring beyond standard buss connections.
Application and workflow in multitrack sessions
Tracking Filters are particularly effective when recording sources with strong energy in bands outside their useful range — kick drums requiring precise subsonic filtering, vocals with mechanical handling noise below 80 Hz, acoustic guitars with excess low-end energy from a capacitor microphone placed close to the body. Adjustable cutoff frequencies allow the filter range to be matched to the specific source and microphone combination rather than applying fixed cutoff values that only work for average-case scenarios. For engineers tracking multiple simultaneous sources, the 500 Series format allows filters to be inserted exactly where they are needed without tying up console channels with fixed-characteristic built-in filters or reaching for outboard that introduces additional conversion stages into the path.
KEY FEATURES
- Bandpass filter module in 500 Series format
- High-pass filter (HPF) with adjustable cutoff frequency
- Low-pass filter (LPF) with adjustable cutoff frequency
- Designed for the recording chain — pre-conversion signal path
- Integrates with existing 500 Series rack infrastructure
- Removes unwanted spectral content before conversion without tying up console channels
TECHNICAL SPECIFICATIONS
- Type: bandpass filter module (tracking filters)
- Format: 500 Series (API Lunchbox compatible)
- Filters: high-pass (HPF) + low-pass (LPF)
- Cutoff frequencies: adjustable
- Application: recording chain, pre-conversion signal path
- Power: 500 Series buss
