Active Two Pair Receiver

The RDL TX-TPR2A is an active two-pair receiver for RDL TP Format-A audio carried through an RJ45 connection. It uses Format-A signal pairs B and C and provides four outputs: two 150 Ω balanced outputs and two 1 kΩ unbalanced outputs. Nominal levels are +4 dBu balanced and -10 dBV unbalanced, with detachable terminal blocks simplifying output wiring. Studio-quality precision active balanced circuitry, flexible powering, and clearly defined audio performance make it a focused interface for routing two received audio pairs to downstream equipment.

Ideal Use Cases

The TX-TPR2A is intended for audio systems using RDL TP Format-A when signal pairs B and C need to be received and presented as balanced or unbalanced outputs. Its combination of two +4 dBu balanced outputs and two -10 dBV unbalanced outputs accommodates equipment with different input formats. The compact module is also appropriate where an RJ45-based audio connection must transition to detachable terminal blocks for permanent or serviceable system wiring.

Why Choose This Model

This receiver combines two-pair audio access with several practical power and protection features. It can be powered locally through its dc power jack or remotely through the RJ45 jack. When local power is used, that power feeds all modules connected to the RJ45 link. An automatic resetting fuse provides wiring-fault protection, while a blue power LED offers an immediate indication that the module is powered. These features support straightforward installation and simplify confirmation of operating status.

Installation and Integration

Connect the RDL TP Format-A source to the RJ45 input, which carries the B and C signal pairs used by the receiver. Balanced and unbalanced audio outputs are available through detachable terminal blocks. Power may be supplied through either the dedicated power jack or the RJ45 connection. The module requires 24 Vdc at 30 mA. Recommended power supplies, which are not included, are the PS-24AS for the USA and the PS-24AX for international use. Measuring 3.0 inches wide, 1.6 inches high, and 1.2 inches deep, the module can be incorporated where installation space is limited.

Performance Highlights

The TX-TPR2A covers a frequency range of 10 Hz to 30 kHz within ±0.1 dB. THD+N is specified at less than 0.005%, and noise is more than 90 dB below a +4 dBu output. Crosstalk is less than -90 dB at 1 kHz and less than -75 dB from 20 Hz to 20 kHz. Balanced output headroom exceeds 20 dB above +4 dBu, with a maximum balanced output level of +22 dBu. Common-mode rejection exceeds 60 dB from 50 Hz to 150 Hz. Together, these specifications define the receiver’s precision active audio performance across its stated operating range.

What Makes It Different

The defining feature of this model is its access to two RDL Format-A signal pairs through one RJ45 input. It provides both 150 Ω balanced and 1 kΩ unbalanced output connections for pairs B and C while retaining independent local or remote power options. Detachable output terminals, RJ45 power distribution, an automatic resetting fuse, and a visible power indicator bring signal conversion, installation convenience, protection, and status monitoring into one small module.

Final Assessment

The RDL TX-TPR2A is a purpose-built choice for receiving audio from Format-A pairs B and C and delivering it at standard balanced or unbalanced levels. Its 10 Hz to 30 kHz response, low distortion, defined crosstalk performance, and greater than 20 dB of balanced-output headroom support demanding audio integration. Flexible 24 Vdc powering, fault protection, detachable terminal blocks, and compact dimensions round out a receiver designed around practical system installation.