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

The Harmonai D223XL is a professional-grade stereo electronic crossover built on the 24 dB/oct Linkwitz-Riley filter architecture—the industry standard for high-fidelity audio. It supports TRS and XLR differential balanced inputs and outputs to effectively suppress noise interference during signal transmission. The crossover point between high and low frequencies is continuously adjustable, enabling flexible integration with diverse loudspeaker systems. It is widely used in professional sound reinforcement, live stage performances, cinemas, and fixed-installation audio systems.
TRS or XLR differential balanced inputs and outputs
24 dB/oct Linkwitz-Riley filter (professional standard)
Stereo mode / Mono subwoofer summing mode selectable
High/low-frequency crossover point continuously adjustable
40 Hz high-pass filter (low-frequency roll-off) on both channels
×10 range selection switch on both channels
Phase inversion switch on all output channels
Independent level adjustment for all frequency-band outputs
Stereo/Mono status LED indicator
AC 220 V
The D223XL professional electronic crossover is suitable for a wide range of professional audio systems: main PA crossover processing in theaters and live venues; audio system optimization in Livehouses and bars; fixed installations in conference rooms and multi-purpose halls; and precise high/low-frequency speaker drive in cinema systems. With continuously adjustable crossover points and independent level control, it offers flexible matching across loudspeaker units of different brands and models.
Learn more about Harmonai’s professional audio equipment solutions—contact our expert team today.