Active Single-Pair Receiver-Twisted Pair Format-A-XLR mic/line output-Stainless

Ideal Use Cases

The RDL DS-TPR1A is an active single-pair receiver for RDL Format-A twisted-pair audio systems. It is suited to an installation that needs to select one Format-A signal pair and present it on a balanced XLR output. The pair-selection switch chooses A, B, or C, while the output can be set for mic or +4 dBu line level. Its 150 Ω balanced output and stainless steel finish make it a focused endpoint for installed audio signal distribution.

The model is also useful where Format-A signal and power must continue to other receivers. RJ45 pass-through supports both, allowing the DS-TPR1A to be daisy-chained with additional Format-A receivers. Power can arrive remotely through the twisted-pair cable or locally through the detachable terminal block, giving the system designer two documented powering paths.

Why Choose This Model

This receiver combines selectable routing, selectable output level, and active balanced conversion in one module. Instead of being tied to a single signal pair, it can draw from A, B, or C. A rear-panel switch selects the output level, so the same model can provide a balanced mic-level feed or a +4 dBu line-level feed. Precision active balanced circuitry is specified for studio-quality performance, and the XLR connection provides a familiar balanced output interface.

The power architecture offers additional integration flexibility. When local 24 Vdc power is used, a fused local power feed serves connected modules. A blue LED confirms that the module is powered. The recommended power supplies are the PS-24AS for USA use and PS-24AX for international use; a power supply is not included.

Installation and Integration

The Format-A input connects by RJ45, and the Format-A output is also RJ45. These connections provide signal and power pass-through, supporting continuation to another compatible receiver. Pair A, B, or C is chosen with the selection switch, and the mic or line level is selected on the rear panel. The audio destination connects to the XLR output. Local power connects through a detachable terminal block; remote power is carried through the twisted-pair connection.

For physical planning, the DS-model mounting box requires a minimum depth of 2.4 inches. Module dimensions are 1.6 inches wide by 4.11 inches high by 1.89 inches deep, or 4.06 by 10.45 by 4.8 cm. The specified ambient operating range is 0° C to 50° C. Power requirement is 24 Vdc at 45 mA, plus the demand of any connected loads, which should be included when sizing the local supply.

Performance Highlights

The DS-TPR1A is specified for a frequency response of 10 Hz to 50 kHz within ±0.1 dB. THD+N is below 0.005%, while noise below +4 dBu is specified at less than -90 dB. Headroom above +4 dBu exceeds 18 dB. Common-mode rejection is greater than 80 dB from 50 Hz to 150 Hz. These figures define the performance of the active balanced signal path across its documented operating range.

At the output, the recovered signal remains balanced through a 150 Ω XLR connection. Output selection makes it possible to match the documented mic-level or +4 dBu line-level operation without changing the receiver model.

What Makes It Different

The DS-TPR1A concentrates routing and power-distribution functions around a single recovered Format-A pair. It selects among three available signal pairs, processes the chosen pair through precision active balanced circuitry, offers mic or line output selection, passes signal and power onward, and supports either remote or local powering. The fused local feed, power-status LED, and daisy-chain capability provide defined integration and status functions within a multi-receiver arrangement.

Final Assessment

The DS-TPR1A is a purpose-built choice for an RDL Format-A system requiring a stainless steel receiver with balanced XLR output. Its strongest fit is an installation that needs A/B/C pair selection, switchable mic or line level, RJ45 signal-and-power pass-through, and flexible 24 Vdc powering. The documented frequency response, low THD+N, headroom, and common-mode rejection complete a tightly specified active receiver for installed twisted-pair audio.