RDL TX-LC2 Unbalanced to Balanced Line Combiner

The TX-LC2 is the ideal choice in installations requiring the active, isolated mixing of two unbalanced line-level audio sources to feed a balanced (or unbalanced) audio input.

The input circuits are high-impedance, line-level (-10 dBV) and are isolated from each other. Therefore the modules may be used to bridge an unbalanced stereo source without affecting the stereo separation. The output from the TX-LC2 is a mono mix of the stereo signal. Gain of the combined signals is adjustable from -10 to +10 dB (rel. +4 dBu output).

The TX-LC2 may also be used to mix two separate sources into a single output. The mixing circuit in the module is an active summing amplifier.

The output driver provides a 150 balanced source to drive high or low impedance, balanced or unbalanced lines.

The input connectors make connection of the TX-LC2 easy. The broad gain range makes the TX-LC2 ideally suited to any installation where a balanced mono signal is needed from a stereo unbalanced source, particularly low-output consumer products such as certain televisions.

Use the TX-LC2 individually, or combine it with other RDL modules and accessories as part of a complete audio/video system.

RDL TX-LC2 Features

• Mix 2 Unbalanced Audio Signals to Mono Balanced
• Combine Stereo Into Mono with Balanced Output
• Output Gain Trim
• Isolation Between Inputs
• Unbalanced to Balanced Conversion
• High-Quality Audio

• TX-LC2 Unbalanced to Balanced Line Combiner1

• Inputs (2) -10 dBV nominal, -22 dBV minimum
• Input Impedance 10 kΩ
• Noise < -85dB below +4 dBu (-10 dBV input @ 12 dB gain)
• THD+N < 0.005%
• Frequency Response
  • 10 Hz to 20 kHz (± 0.25 dB into bridging input)
  • 25 Hz to 20 kHz (± 0.25 dB into 600Ω)
• Gain ±10 dB (rel. +4 dBu balanced output, adjustable)
• IMD > 0.001%
• Output 150 Ω balanced, +4 dBu to drive low or high impedance, balanced or unbalanced lines
• Headroom > 18 dB
• Ambient Operating Environment 0° C to 55° C
• Power Requirement GROUND-REFERENCED, 24 Vdc @ 30 mA
• Dimensions Height: 1.4 in. 3.6 cm; Length: 3.0 in. 7.6 cm; Width: 1.2 in 3.0 cm
• Package Type Cardboard Box
• Package Dimensions 2 x 2 x 4 in.
• Shipping Weight 0.255 lbs.
• WEEE weight 0.195 lbs.
• Tariff code 8543.70.9860