The NA-3XO is an active crossover unit designed to divide a full-range audio signal into three separate frequency bands:

• Low frequencies (Bass) → sent to subwoofers
• Mid frequencies → sent to midrange speakers
• High frequencies (Treble) → sent to tweeters

• 3-Way Stereo / 2-Way + Sub Mode
  Can operate in full 3-way mode or simpler configurations depending on your setup.
• Active Processing
  Works before amplification (unlike passive crossovers), giving better control and cleaner sound.
• Adjustable Crossover Frequencies
  You can set the cutoff points between low, mid, and high frequencies.
• Independent Output Controls
  Separate level controls for each band (Low, Mid, High).
• Phase & Polarity Control (in many models)
  Helps align speakers for better sound coherence.