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The Format-A Two-Pair Audio Sender from Radio Design Labs accepts either a stereo line-level or 1 to 3W mono-amplified, fixed-level signal, usually from a TV located in commercial hospitality centers. The audio sender distributes the source signal to two Format-A output jacks to feed multiple Format-A receivers. The input accepts either an unbalanced stereo or an amplified mono input. This sender sends the unbalanced left and right sources over balanced twisted-pair cables on pairs B and C. If a mono-amplified soure is connected, the mono signal is fed to both pairs B and C. Audio circuitry is active balanced for superior audio fidelity and low-noise performance. This audio sender is normally mounted behind a TV where AC power is available.
A 24VDC power supply (sold separately) provides power to this audio sender and to the connected receiving modules. It is not necessary to connect power supplies to the connected receivers, thus facilitating installation. A front-panel blue LED is illuminated when the Format-A two-pair audio sender is receiving and distributing 24VDC to both 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 Format-A Two-Pair Audio Sender is suitable for guest room installations with bedside and restroom listening stations. The outputs are fully compatible with all RDL Format-A receivers. This audio sender features superior audio performance. Design simplicity, ease of installation, flexibility, automatic fused power, hum rejection, low noise, and low distortion make this sender an optimum choice for designers and installers.
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
Distributes power to connected receivers
Automatically resetting fuse for output voltage
Compact all metal construction
In the Box
RDL Format-A Two-Pair Audio Sender
Limited 3-Year Warranty on Parts & Labor
Table of Contents
3 20 kΩ unbalanced (2, left and right) 100 kΩ balanced (mono amplified)
Unbalanced: Phono jack Balanced: Mini-jack
-10 dBV unbalanced; 1 W (8 Ω) to 10 W (8 Ω) balanced, 2 W nominal
Format-A Signal Pairs Used: 2 (B, C)
RDL TP Format-A
10 Hz to 50 kHz (± 0.1 dB)
THD + N
Noise below +4 dBu: <-85 dB
<-85 dB (10 Hz to 10 kHz); <-80 dB (10 kHz to 20 kHz)