Behringer CX3400: Super-X Pro Stereo Crossover

The Behringer Super-X Pro CX3400 is a professional-grade analog crossover designed for live sound reinforcement and installed speaker systems that require precise frequency band separation. Its Linkwitz-Riley filters operate at a steep 24 dB per octave slope, producing an absolutely flat summed amplitude response and zero phase difference at the crossover point—critical characteristics for maintaining tonal accuracy across multi-driver loudspeaker systems. The unit can be configured as a stereo 2-way, stereo 3-way, or mono 4-way crossover, accommodating everything from simple two-box PA setups to complex quad-amped systems from a single rack space.

Each output channel features its own independent limiter, allowing precise threshold settings that protect individual drivers from damage without affecting the other frequency bands. The adjustable time delay on each output provides phase alignment between drivers that are physically offset within a cabinet or between separate enclosures, and the built-in CD horn equalization corrects the frequency response anomalies typical of constant directivity horns. Together, these features give sound engineers fine-grained control over speaker system behavior without requiring multiple outboard processors.