RDL FP-TPSR4A Format-A Two-Pair Audio Sender/Receiver

RDL FP-TPSR4A Format-A Two-Pair Audio Sender/Receiver

RDL FP-TPSR4A Format-A Two-Pair Audio Sender/Receiver

RDL FP-TPSR4A Format-A Two-Pair Audio Sender/Receiver

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RDL FP-TPSR4A overview

  • 1Description

The RDL FP-TPSR4A Format-A Two-Pair Audio Sender/Receiver provides the interface between a hotel room television and listening stations and audio input panels. The Sender Section is an RDL Format-A audio sender that accepts either a stereo line-level or 1 to 3W mono amplified fixed-level signal, usually from a commercial hospitality equipped TV. The FP-TPS4A unit distributes the source signal to two Format-A RJ45 output jacks to feed multiple Format-A receivers.

The input accepts either an unbalanced stereo or an amplified mono input. The FP-TPSR4A unit sends the unbalanced left and right sources over balanced twisted-pair cables on pairs B and C. If a mono amplified signal is connected, the mono source is fed to both pairs B and C. Audio circuitry is active balanced for excellent audio fidelity and low-noise performance.

The Receiver Section is an RDL Format-A receiver with an RJ45 input fed by sender modules such as the D-TPS8A stereo input panel for a portable computer or media player. Audio signals received on pairs B and C are amplified to feed two stereo RCA connectors at a standard -10 dBV consumer level. One of these outputs connects to the TV AUX input; the other is available to feed the input of a stereo amplifier in the room.

The FP-TPSR4A Sender/Receiver is normally mounted behind a TV where AC power is available. A 24VDC power supply, available separately, provides power to the FP-TPSR4A unit and to the connected sending & receiving modules. It is not necessary to connect power supplies to the connected senders and receivers, facilitating installation. A front-panel blue LED is illuminated when the FP-TPSR4A unit is receiving and distributing 24VDC to all the three RJ45 jacks.

The distributed output DC voltage is short-circuit protected by an automatically resetting fuse. A power fault on either output jack causes the blue LED to extinguish.

The FP-TPSR4A Sender/Receiver is suited for guest room installations with bedside and restroom listening stations. The inputs and outputs are fully compatible with all RDL Format-A receivers. The unit features automatic fused power, hum rejection, low noise, and low distortion for designers and installers looking to work with twisted pair products.


Combination sender and receiver module
Suitable for hotel room audio systems
Distributes power to all connected modules
Automatically resetting fuse for output voltage
Compact all-metal construction

Sender Section

Format-A sender from TV fixed audio output
Sends left and right audio channels
Unbalanced stereo input from fixed level audio source
Balanced audio input from mono amplifier
High quality audio distributed to each RJ45 output
Two Format-A outputs on RJ45

Receiver Section

Format-A receiver compatible with 2-pair senders such as D-TPS8A (not included)
Two -10 dBV stereo unbalanced outputs on RCA connectors
L (Left) output from Pair B; R (Right) from pair C
The output feeds the AUX input of the TV
In the Box
RDL FP-TPSR4A Format-A Two-Pair Audio Sender/Receiver
  • Limited 3-Year Warranty on Parts & Labor
  • Table of Contents
    • 1Description

    RDL FP-TPSR4A specs

    Inputs 3, 20 kΩ unbalanced (2, left and right); 100 kΩ balanced (mono amplified)
    Input Connections Phono jack (Unbalanced); mini-jack (Balanced)
    Input Level -10 dBV unbalanced; 1 W (8 Ω) to 10 W (8 Ω) balanced, 2 W nominal
    Twisted Pair Format-A Signal Pairs Used: 2, B, C
    Output RDL TP Format-A
    Output Connection RJ45
    Frequency Response 10 Hz to 50 kHz (± 0.1 dB)
    THD + N <0.05%
    Noise Below +4 dBu: <-85 dB
    Crosstalk <-85 dB (10 Hz to 10 kHz); <-80 dB (10 to 20 kHz)
    Headroom Above +4 dBu: >18 dB
    Input RDL Format-A
    Input Connections RJ45
    Twisted Pair Format-A Signal Pairs Used: 2, B (Left), C (Right)
    Output 100 Ω unbalanced
    Output Connections 2, RCA phono stereo
    Frequency Response 10 Hz to 40 kHz (± 0.1 dB)
    THD + N <0.005%
    Noise Below +4 dBu: <-90 dB
    Crosstalk <90 dB (1 kHz); <75 dB (20 Hz to 20 kHz)
    Headroom Above -10 dBV: >20 dB
    CMRR >65 dB (50 Hz to 150 Hz)
    Indicators Power (Input and outputs active)
    Power Connections Power jack (locking)
    Power Requirement 24 VDC @ 35 mA plus connected loads
    Current (Maximum) Load Current: 500 mA
    Dimensions (L x W x H) 6.58 x 3.25 x 1.68" (16.71 x 8.25 x 4.26 cm)
    Weight 1.00 lb (0.45 kg)
    Packaging Info
    Package Weight 1.005 lb
    Box Dimensions (LxWxH) 7.0 x 4.375 x 2.25"

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