RDL TX-LC2 Unbalanced to Balanced Line Combiner, Mix Unbalanced Audio Signals to Mono Balanced

For AV integrators and security professionals who need a reliable way to get mono, noise-resistant audio from stereo consumer sources, the Radio Design Labs TX-LC2 line combiner is the practical solution. This pro audio signal combiner actively mixes two unbalanced line-level inputs into a balanced mono output, ideal for feeding a mixer, amplifier or monitoring station in surveillance, monitoring and public-address systems. High-impedance, isolated inputs let you bridge an unbalanced stereo source without compromising channel separation, while the active summing amplifier and a strong balanced output driver provide a stable, low-noise signal for long cable runs. The TX-LC2 includes an output gain trim adjustable from -10 to +10 dB to match levels quickly during installation. Powered by 24 V DC and housed in a compact 1.2" x 1.4" x 3" module, it installs easily in RDL racks or equipment cabinets. Use the TX-LC2 to consolidate TV feeds, mix two line sources into one monitor input, or simplify audio for surveillance and AV distribution—add it to your system for cleaner, more manageable audio.

• Convert two unbalanced line-level sources into a single balanced mono feed for clean, noise-resistant audio distribution
• Adjustable output trim (-10 to +10 dB) for quick level matching with mixers, recorders or security consoles
• Isolated, high-impedance inputs prevent crosstalk and won’t load low-output consumer devices (TVs, media players)
• Robust balanced output driver (150 W equivalent) to drive long runs and mixed-impedance audio lines reliably
• Compact module (1.2" x 1.4" x 3") fits into RDL systems or tight AV/security racks for discreet integration