TX-AFC1M

RDL TX-AFC1M – Unbalanced to Balanced Audio Transformer (RCA to XLR)

The RDL TX-AFC1M is a studio-quality audio transformer designed for professional AV installations, providing galvanic isolation and converting unbalanced consumer-level signals to balanced professional-level outputs. It is ideal for applications requiring transformer coupling between unbalanced sources and balanced equipment.

The TX-AFC1M is a single-channel module featuring a phono jack input and a male XLR output. A bifilar transformer converts the input to balanced, with unity gain and minimal insertion loss (0.25 dB). The XLR shield (pin 1) is connected to the RCA ground.

With a frequency response of 20 Hz to 20 kHz (±0.1 dB), ultra-low distortion (<0.06% from 50 Hz to 20 kHz, typically 0.0015% at 1 kHz), and a 10 kΩ input impedance, the TX-AFC1M delivers the clarity, headroom, and fidelity expected in studio environments.

Its compact design allows mounting in various locations, including rack sides and rails, using RDL mounting accessories. The connector layout supports high-density installations while maintaining accessibility.

Functionality

• Converts unbalanced RCA input to balanced XLR output
• Provides galvanic isolation between devices
• Matches consumer to professional audio levels
• Compact design for flexible mounting
• Ideal for studio and general-purpose installations

Features

• Device type: unbalanced to balanced audio transformer
• Input: RCA, -10 dBV (max +22 dBu), 10 kΩ
• Output: XLR (balanced)
• Frequency response: 20 Hz – 20 kHz (±0.1 dB)
• THD: < 0.06% (50 Hz – 20 kHz), typ. 0.0015% (1 kHz)
• Insertion loss: 0.25 dB (20 Ω source, 10 kΩ load)
• Connectors: gold-plated RCA (input), XLR (output)
• Mounting: flat surfaces, rack sides, front/rear rails
• Design: passive, compact

The RDL TX-AFC1M is a reliable solution for AV professionals needing high-quality signal conversion and isolation between consumer and professional audio systems.