TX-J2

RDL TX-J2 - Unbalanced Stereo to Balanced Mono Audio Input Transformer

The RDL TX-J2 is a passive audio input transformer designed for professional AV installations, allowing two unbalanced line-level stereo signals to be summed into a single balanced mono output. It provides galvanic isolation and effective hum rejection, making it ideal for integrating consumer audio sources into professional systems.

The front panel features two gold-plated RCA jacks for connecting stereo or dual mono sources. These inputs are passively mixed and balanced through high-quality audio transformers. The output is provided on a detachable terminal block, suitable for connection to equipment with 10 kΩ or higher input impedance.

The TX-J2 does not amplify the signal; it performs format conversion without gain. For applications requiring a +4 dBu balanced output or when input levels are particularly low, RDL’s TX-LC2 is recommended.

Its compact design allows flexible mounting in equipment racks or on flat surfaces using RDL mounting accessories. The TX-J2 can be used standalone or as part of a complete AV system.

Functionality

• Mixes two unbalanced stereo inputs into one balanced mono output
• Provides unbalanced to balanced conversion without gain
• Galvanic isolation and hum rejection
• Ideal for integrating consumer audio into professional systems

Features

• Device type: passive audio input transformer
• Inputs: 2 x RCA (unbalanced, stereo)
• Output: 1 x balanced mono (terminal block)
• Frequency response: 30 Hz - 20 kHz (±1 dB)
• Input level: -10 dBV (consumer level)
• Connectors: gold-plated RCA (input), terminal block (output)
• Design: passive, compact
• Mounting: flat surfaces, rack sides, front/rear rails

The RDL TX-J2 is a reliable solution for AV professionals needing simple and effective stereo-to-mono conversion with balanced output and noise isolation.