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The Harrison Laboratories FMOD XLR series provides professional, line-level passive crossovers for balanced audio systems. Like their RCA counterparts, these "active crossover simulators" are entirely passive, requiring no power while providing the clean frequency filtering typically associated with active electronic units .

Professional Balanced Design

The XLR FMODs are specifically engineered for professional audio environments, such as live sound, recording studios, and high-end home theater setups using balanced XLR connections.

• True Balanced Circuitry: Unlike standard RCA FMODs, these units maintain a balanced signal path to preserve common-mode rejection and minimize noise over long cable runs .
• Construction: Typically manufactured using high-quality connectors to withstand the rigors of professional use .
• Placement: Installed inline between a balanced source (like a mixer or preamp) and a balanced amplifier .

Filtering Options & Performance

XLR FMODs are available in both High Pass (blocking low frequencies) and Low Pass (blocking high frequencies) configurations .

• Standard Slope: Most units feature a 12 dB per octave slope, providing a smooth and musical transition between drivers .
• Available Frequencies: They are offered in various discrete frequency points to suit different needs: please see listed options
  
  Transparency: They boast noise and distortion levels that are virtually "too low to measure," ensuring zero negative impact on audio fidelity.
  
  
  MADE IN THE USA🇺🇸