Outreach Plates

SigNET's Outreach Plate audio input extension system comprises a range of wall, ceiling and desk mountable single gang audio input plates specifically designed to increase the audio input capability of an induction loop system. Covering the most common variants of audio connector, they work by mixing the signals from various audio input sources into one balanced line level input which can be fed into the line input of a compatible amplifier.

Mountable on 25mm back boxes, each plate features a built-in mixer, pre-amp, input level control and balanced output. The fact they can be installed at the most convenient point on an installation overcomes the need for long and potentially hazardous microphone/audio leads.

Typically, up to 10 Outreach plates (any mix) can be daisy-chained to one balanced line level input with cable lengths of up to 100m easily achievable using standard two-pair audio cable with no recognisable degradation of audio signal quality.

Each outreach plate requires four wires, two balanced line (A +, A –), one ground (0V) and one power connection (12-32 V DC regulated). Click on the thumbnails below left for typical wiring schematics.

ble c/w Schuko plug adaptors, black, 7.5A (add /SH to the UK part nos)


Supply volts:
12 to 37V regulated d.c.
Supply current:
6 to 11mA


Input – balanced/unbalanced line:
0.775Vrms (0dBu)
Input impedance:
> 10KΩ
Output – balanced line:
0.775Vrms (0dBu) + 6dB (overload)
Output impedance:
< 100Ω
Frequency response:
90Hz to 20kHz
Insertion loss/gain:
< ±0.05dB Insertion signal to noise ratio: >79dB THD + noise: <0.07%


Input signal level:
-40dBu to -30dBu
Input gain control:
∞ to 0dB
Input impedance:
Phantom volts:
11V/0V (link selectable)
Signal to noise ratio:
> 60dB
THD + noise:
<0.07% APL / APXL / APQL – Adjustable input specification Input signal level: -10dBu to +6dBu Input gain control: ∞ to 10dB
Input impedance:
> 1KΩ
Phantom volts:
Signal to noise ratio:
> 71dB
THD + noise:
< 0.03% APM – Adjustable input specification Input signal level: n/a Input gain control: ∞to 0dB Input impedance: n/a Phantom volts: n/a Signal to noise ratio: >60dB
THD + noise:
< 0.07% APXO output plate specifications Max. Output signal level XLR: +12dBu balanced Signal to noise ratio: >95dB
Output level control XLR:
∞ to +12dB
THD + noise:
< 0.01%
Output signal level line:
0dBu balanced fixed
Outreach Plates

Specific References


Signet Afils Guide

SigNET loop guide overview

Download (5.18M)

AFILS Test Certificate

Test Certificate for AFILS

Download (387.76k)

Outreach Plates Guide

Outreach plates audio input extension system installation guide

Download (172.41k)

APXM/M Instructions

APXM/M Dual Input Outreach Plate

Download (145.17k)

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