Input/Output Interfaces
TRS or XLR differential balanced inputs and outputs
Professional audio, microphones and system integration

The Harmonai D234XL is a professional-grade stereo 24-octave electronic crossover built to the industry-standard 24dB/oct Linkwitz-Riley filter specification, delivering precise frequency band separation and signal processing for professional audio systems. It features TRS/XLR differential balanced inputs and outputs, effectively suppressing noise interference during signal transmission and ensuring exceptional signal purity. Crossover points are continuously adjustable, and each band’s output level can be independently controlled—enabling exact matching to any loudspeaker system’s crossover requirements. The unit supports flexible switching between stereo mode and subwoofer synthesis mode (summed L+R), making it widely suitable for professional stage productions, large-scale conference systems, Livehouse venues, and premium home theater installations.
TRS or XLR differential balanced inputs and outputs
Selectable stereo mode or subwoofer mode (L+R summed)
Both channels feature an x10 range selection switch
40Hz high-pass filter (low-frequency cut) on both channels
Phase inversion switch on all outputs
Independent output level adjustment for all frequency bands
24dB/oct Linkwitz-Riley filter (professional standard)
Stereo/mono status indicator LED
Continuously adjustable crossover point
220V
The D234XL electronic crossover is designed for professional applications requiring precise full-range signal splitting into discrete frequency bands—each routed to dedicated loudspeakers: in professional stage productions, it enables clean high/mid/low three-way active crossover with amplifiers and speakers; in Livehouse venues and bars, it delivers accurate subwoofer and full-range speaker integration; in large conference rooms and auditoriums, it enhances speech intelligibility and musical fidelity; and in home theater and HI-FI audio systems, it provides audiophile-grade crossover processing for refined, detailed sound reproduction.
Contact us anytime for detailed technical specifications, system wiring diagrams, or pricing information for the Harmonai D234XL professional electronic crossover.