SGA-40 In Wall Speaker Amplifier Plate

Product code: 3682
SGA-40 In Wall Speaker Amplifier Plate

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The SGA-40 is a 20 watt per channel stereo wall and mounting amplifier with 4 audio inputs for sources such as ipods and other mp3 players. It is ideal for multi-room audio, classroom, hotel bedroom and small meeting room applications.

The SGA40 is supplied with a UK one gang white mounting frame and other suitable mounting frames are available in a wide range of finishes (see below). The SGA-40 itself is supplied with a black adhesive label attached, this can be removed if required, showing the white plate underneath. The SGA-40 fits a standard UK single width back box and requires only a 35mm depth, and it will also fit the single DIN back box as used in the European market.

The SGA-40 uses an 86% efficient class D design and has a RMS* output of 20 watts per channel into 8 Ohms when powered from an 18V power supply or 10 watts when powered by the included 12V power supply, and as most quality loudspeakers are 8 Ohms, maximum efficiency is assured. It is fitted with two rear inputs on screw terminals for permanent connections and two 3.5mm stereo jack on the front panel for other sources making the SGA-40 easy to install & use. Inserting a jack into the front socket will automatically disconnect the rear input.

When no signal is detected on the inputs, the plate goes into a low power standby mode.

  • Power Output (12V Stereo Mode) 10W RMS* per channel into 8 Ohms
  • Power Output (18V Stereo Mode) 20W RMS* per channel into 8 Ohms
  • Bandwidth 20Hz to 22KHz +/- 1dB
  • THD & Noise <0.8%
  • S/N Ratio 76dB
  • Gain 26dBu
  • Coupling Input: AC; Output DC.
  • Minimum input for full power -6dB
  • Protection - Integral, auto resetting, current limit & thermal protection. Integrated click & pop suppression.
  • Power Source 12V DC @ 2.0A ( supplied ) or 18V DC @ 3.5A
  • Power Connector - Screw Terminals.


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Please call us on 01623 672070 first to discuss why you may wish to return an item and to receive a returns number. We will take all steps possible to solve your problem / offer you a replacement or exchange product, or a refund.
We have a no quibble returns policy within 30 days of purchase, and we will issue a full refund provided the item is in a re-saleable condition, (i.e unused, unassembled, unmarked and in original unmarked packaging). It is the responsibility of the customer to return the item and ensure the package has been reasonably protected in return transit. You must include a copy of your invoice with the return.