The TX-1A is used primarily for galvanic isolation and format conversion between equipment. Conversion from -10 dBV consumer level up to +4 dBu professional level requires voltage gain. The transformer in the TX-1A has a 1:1 ratio and uses an adjustable attenuator circuit at its output to lower the output signal to the level required….
BALANCED TO UNBALANCED LINE-LEVEL CONVERSION
In a perfect world, the audio connections between different pieces of gear would all be alike. Unfortunately, this is not the case and likely never will be. Balanced and unbalanced audio lines (1) are not inherently compatible and unless they have some help they don’t always play well together.
For passive conversion from balanced to unbalanced line-level the RDL TX-1A Adjustable Line Transformer provides a versatile and economical solution.
The TX-1A provides:
- Transformer isolation between the balanced signal and the unbalanced input, thereby eliminating hum and noise caused by ground loops.
- Adjustable output of 4 to 24 dB below the input.
- 10kΩ input impedance (10kΩ or greater load) allows bridging of multiple TX-1A’s for distribution to multiple amplifier inputs.
(1) For more information see THE DIFFERENCE BETWEEN BALANCED AND UNBALANCED AUDIO.