ST-CX2

RDL ST-CX2 - Two Band Active Line-Level Crossover

The RDL ST-CX2 is a compact, two-band active line-level crossover designed to drive audio power amplifiers in professional AV systems. It splits a +4 dBu line-level signal into two frequency bands: low-frequency (woofer) and full-range, each with independent equalization.

The input and outputs are balanced, with support for unbalanced connections. The FULL RANGE output is optimized for speaker systems without low-frequency drivers, covering 100 Hz to 30 kHz with midrange EQ centered at 2 kHz. The WOOFER output covers 40 Hz to 165 Hz and includes a BOOST EQ centered at 50 Hz.

A LOOP THRU output allows connection to additional processing modules, such as the ST-CX2S subwoofer crossover. The ST-CX2 features RDL’s SupplyFlex™ power input, supporting ground-referenced, floating, or bipolar 24V DC power sources.

Functionality

• Two-band active crossover for line-level signals
• Splits signal into woofer and full-range outputs
• Adjustable EQ for low and mid frequencies
• LOOP THRU output for additional processing
• Supports balanced and unbalanced connections
• Compact STICK-ON form factor for easy AV integration
• SupplyFlex™ power input - compatible with various 24V DC types

Features

• Input: +4 dBu, balanced (unbalanced optional)
• Outputs:
  • FULL RANGE: 100 Hz - 30 kHz, EQ at 2 kHz (up to -8 dB)
  • WOOFER: 40 Hz - 165 Hz, BOOST EQ at 50 Hz
  • LOOP THRU: for connection to additional crossover
• Gain: nominal unity (0 dB)
• Low noise and low distortion
• Power: 24V DC (ground-referenced, floating, or bipolar)
• Mounting: STICK-ON module - compact and integration-friendly

The RDL ST-CX2 is an ideal solution for AV integrators who need precise frequency band separation and EQ before amplification. Perfect for fixed installations in commercial, educational, and entertainment environments.