Active Two-Pair Receiver-Twisted Pair Format-A-stereo phono jack outputs-Black

The RDL DB-TPR2A is a black active two-pair Format-A receiver designed to convert two RDL Format-A signal pairs into left and right unbalanced RCA phono outputs. Pair B feeds the left output, while pair C feeds the right output. The module combines stereo audio reception, RJ45 signal and power pass-through, remote powering, and local power distribution with studio-quality precision active balanced circuitry.

Ideal Use Cases

This model is intended for RDL Format-A systems requiring two unbalanced -10 dBV audio outputs from a twisted-pair connection. Its defined left and right routing makes it suitable when pair B must feed the left channel and pair C must feed the right channel through standard RCA phono connections. RJ45 pass-through also supports installations where the Format-A signal and power pairs need to continue to additional receivers.

The DB-TPR2A can be powered remotely through the twisted-pair cable or from a local 24 Vdc source. This flexibility supports systems in which power is already distributed over the Format-A cabling as well as installations that require a local power connection.

Why Choose This Model

The DB-TPR2A combines two audio channels, active balanced input circuitry, power handling, and system pass-through in one module. It delivers two 100 Ω unbalanced outputs on RCA phono jacks at a nominal -10 dBV level. The left output is assigned to Format-A pair B, and the right output is assigned to pair C, providing a clearly defined stereo signal path.

A blue LED indicates that the module is powered. The local power input is provided on a detachable terminal block, while power can also enter through RJ45. When local power is used, a fused feed supplies connected modules, allowing the receiver to participate in a daisy-chained Format-A arrangement.

Installation and Integration

The Format-A input connection for D- and DS-series models is RJ45, and the Format-A output is also provided on RJ45 for continued signal and power pair pass-through. The two audio outputs use RCA phono connectors. Power connections include the detachable terminal block and RJ45 interface.

The module requires 24 Vdc at 45 mA plus the requirements of any connected loads. Recommended supplies, which are not included, are the PS-24AS for the USA and PS-24AX for international use. The stated minimum mounting-box depth is 2.4 inches for D- and DS-series models. Module dimensions are 1.6 inches wide, 4.11 inches high, and 1.89 inches deep.

Its supported ambient operating range is 0° C to 55° C. Installers can use remote twisted-pair power, connect a local supply at the terminal block, or incorporate the unit into a chain of additional Format-A receivers.

Performance Highlights

The active circuitry provides a frequency response of 10 Hz to 50 kHz within ±0.1 dB. THD+N is specified at less than 0.005%, while noise below +4 dBu is less than -90 dB. Headroom above +4 dBu exceeds 18 dB, and common-mode rejection is greater than 80 dB from 50 Hz to 150 Hz. Crosstalk is specified as less than 90 dB at 1 kHz.

These published figures define the module’s audio operating characteristics across frequency response, distortion, noise, headroom, channel separation, and common-mode rejection. Precision active balanced circuitry receives the Format-A signals before delivering the two unbalanced RCA outputs.

What Makes It Different

The DB-TPR2A does more than provide a basic pair of audio connectors. It actively receives two designated Format-A pairs, converts them to unbalanced phono outputs, and retains RJ45 pass-through for signal and power. Remote powering and fused local power distribution provide two integration approaches without changing the pair assignments or output format.

This black version also offers direct visual power confirmation through its blue LED. Its combination of pair-specific stereo routing, daisy-chain capability, and dual power-entry options distinguishes it as a purpose-built receiver for RDL Format-A infrastructure.

Final Assessment

The RDL DB-TPR2A is a focused solution for extracting left and right unbalanced audio from Format-A pairs B and C. It provides two -10 dBV RCA phono outputs, wide 10 Hz to 50 kHz frequency response, RJ45 pass-through, and remote or local 24 Vdc powering. For installations built around RDL Format-A twisted-pair distribution, it brings audio conversion and power-management functions together in a compact black module.