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TX

 SERIES

 

Model TX-LC2 
Active Audio Combiner/ 
Balanced Line Converter

 

 
ANYWHERE YOU NEED... 

 

    To Mix Two Unbalanced Audio Signals to Mono Balanced 

  To Combine Stereo Into Mono with Balanced Output 

  A Gain-Trim For an Output 

  Isolation Between Inputs 

  Unbalanced to Balanced Conversion 

  High Quality Audio

 

 
You Need The TX-LC2!

 

 

 

The TX-LC2 is part of the group of versatile TX series products from Radio Design Labs.  The TX series 
feature the advanced circuitry for which RDL products are known, combined with durable, quality 
connectors.  The ultra-compact TX series can be mounted in limited space using the adhesive methods 
popularized by RDL’s STICK-ON

®

 Series. The TX-LC2 may be mounted directly to a backboard or chassis 

using a variety of mounting options available from RDL.

 

 

APPLICATION:

  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 output.  

 

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 Unity to 14 dB.

 

 

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 

Ω

 balanced source to drive high or low impedance, balanced or 

unbalanced lines. The TX-LC2 may be operated from any power supply voltage between 24 and 33 Vdc, 
and as low as 12 Vdc with reduced headroom.  The module’s normal operating voltage is 24 Vdc. 
 
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 RACK-UP

®

, STICK-ON, TX or FLAT-PAK™ series audio or 

video modules as part of a complete audio/video system. 
 

 
 

      

           

 

RDL   

   659 N. 6

th

 St.   

   Prescott, AZ., USA 86301   

   (928) 443-9391   

   FAX (928) 443-9392   

   

www.rdlnet.com

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