CS Port

Active Crossover ACN400

Active Crossover ACN400 image
Overview

The ACN400 is an analog crossover network featuring the groundbreaking “MK Filter,” which eliminates phase rotation even with a steep -12dB/Octave slope. Designed for high-performance multi-amp systems, it supports 2-way, 3-way, 4-way, and 3D configurations, making it a versatile centerpiece in any high-fidelity setup. Its minimalist signal path and precision-built attenuators preserve sonic purity while offering deep customization.

Active Crossover ACN400 image
Active Crossover ACN400 image
Technical Specs

This analog crossover offers unmatched phase integrity through CS Ports proprietary MK Filter technology, delivering signal separation without the typical compromises in timing or soundstage. A resistive switching attenuator using crossbar-twin-construction relays ensures distortion-free volume control. The doubly regulated power supply combines switching and dropper stages for optimal stability and low noise. The ACN400 also includes transformer-balanced inputs and outputs for fully symmetrical signal transmission, plus programmable memory presets for quick recall of different system configurations.

  • Circuit Type: CR type MK Filter analog crossover
  • Slope Characteristic: Fixed -12 dB/Oct
  • Input Terminals: 1x Balanced (XLR), 1x Unbalanced (RCA)
  • Output Terminals: 1x Balanced (XLR), 1x Unbalanced (RCA)
  • Max Input Voltage: 3.0 V
  • Max Output Voltage: 3.0 V
  • Input Impedance: 3k
  • Output Impedance: 300
  • THD: 0.1% at 0.3V / 1kHz
  • Frequency Response: 20Hz to 20kHz (+0, -2dB)
  • Signal to Noise Ratio: 80dB (IHF-A)
  • Crosstalk: 70dB (IHF-A)
  • Gain: 0 dB
  • Level Adjustment:
    +0 to -8 dB (0.5 dB steps)
    -8 to -13 dB (1 dB steps)
    -13 to -16 dB (1.5 dB steps)
    -16 to -30 dB (2-6 dB steps)
  • Crossover Frequencies:
    Low/Mid-low: 63, 100, 200, 400Hz, FLAT
    Mid-low/Mid-high: 400, 630, 1000, 2000Hz
    Mid-high/High: 2000, 4000, 8000Hz, FLAT
  • 3D Output: Supported (Lch-Low, Subwoofer + 3Way)
  • Memory Recall: 3 memory slots
  • Mute Function: Channel and master mute available
  • Power Supply: AC 100/117/220/240 V, 50/60 Hz
  • Power Consumption: 60W
  • Dimensions: 470W 90H 350D mm
  • Weight: 16 kg
  • Finish: Anodized aluminum
  • Warranty: 5 years