Here are the last pictures of the amplifier modules, which are mounted under the wheelchair. The box with both modules is connected with a sub-d plug, so later, it could be replaced easily by a better amplifier module.

At the end, I covered the whole box with a sheet of aluminum. In the meantime, I've also soldered two potis to the circuit in order to adjust the maximum volume of each channel. Those potis are fixed inside that aluminum cover. And again, I didn't take a picture of it. But I guess, that this is also not so important.

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