#diyelectronics #diyaudio Testing amplifiers can be a noisy business, with loud test signals adding an irritating distraction to an otherwise pleasant experience. If you want to test the amplifier at high output power, this can be quite impossible unless you have a soundproof room sitting around.
This project provides the option of switching the signal either to a speaker, or to a dummy load made up of power resistors, which effectively provides the amplifier with the equivalent of a speaker at its output, but without the noise. The energy is converted to heat in the resistors instead of sound energy, so testing become much more pleasant.
The design aspect of this project is actually very simple, but the choice of modelling it first in Sketchup makes it much more interesting.
Hope you enjoy it.


You can now support the channel:
  / mcaldeira   https://paypal.me/macaldeira
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