The Citronic 170.929UK active crossover separates the frequencies, directing the low frequencies to the subwoofer amplifier and the mid and high frequencies to the satellite speaker amplifier. It operates as a 2-way crossover in stereo mode or a 3-way crossover in mono mode, and features Butterworth filters with an 18 dB/octave slope.

The crossover frequencies are continuously adjustable, while the phase inversion function and 40 Hz subsonic filter round out its features. The inputs and outputs use XLR connections, and the unit can be mounted in a 19-inch rack.

• Type: Active crossover
• Modes: 2-way stereo and 3-way mono
• Crossover range, stereo mode: 50 Hz–5 kHz / 750 Hz–7.5 kHz
• Crossover range, mono mode: 50 Hz–5 kHz / 750 Hz–7.5 kHz / 2 kHz–20 kHz
• Filter slope: 18 dB/octave
• Filters: Butterworth
• Subsonic filter: 40 Hz
• Crossover frequency adjustment: Continuous
• Phase inversion: Yes
• Input and output connections: XLR
• Rack mounting: 19-inch
• Power supply: 115 / 230 Vac, 50 / 60 Hz (IEC)
• Input impedance, balanced: 40 kΩ
• Input impedance, unbalanced: 20 kΩ
• Output impedance: 220 Ω
• Frequency response: 20 Hz–25 kHz, +0 / −1 dB
• Signal-to-noise ratio: >90 dB
• THD: 0.006%
• Dimensions: 482 × 44 × 170 mm
• Weight: 2.5 kg