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Home made Plexy-glass box with power supply and audio amplifier.

The idea was born because in house cinema I had no SUB. The system is 5.1, but the SUB was not amplified output. Variants have been two. Buy an active SUB, or just bought an amplifier and make a box

Step 1:

First of all, I bought 2x50w Class-D amplifier, which has a working range from 10VDC to 26VDC for less than US $7

Of course, the 12V power supply has much less gain. But the test was authorized.

So I made a small body of plexiglass. Most of the material I picked up from my workshop :) so that the product is not exactly profi

Step 2:

The amplifier has been tested, but missing the right power supply. Circuit for power supply was copy from internet .

In view of the fact that when you switch the amplifier sounds less bang in speakers (what is normal for a bad class) so, I added a circuit that delays the activation speakers.

Step 3:

So ... the circuit is assembled, but not in the case. In the garage I had some plexi glass panels. Dimensions were appropriate. For plexi bend several variants of. it can be bent with a strong blow dryer or use of the filament (video)

Step 4:

And in the end it was necessary to have all screwed to the chassis. Again, I used the resources available in the garage. Some of the spacers, some wire and that's it.

<p>What can I use to amplify the voice that is loud and clear</p>
<p>What would i need to change to make it 200W? </p>
<p>Try something like this: </p><p><a href="http://www.aliexpress.com/item/LM3886-4-NE5532-BTL-Audio-power-amplifier-board-parallel-BTL-200W/32254623962.html?spm=0.0.0.0.sr883e" rel="nofollow">http://www.aliexpress.com/item/LM3886-4-NE5532-BTL...</a></p><p>But u need a different power supply</p>
<p>Thanks a lot!</p>
<p>Woah I bet the sound is amazing, not to mention this is the coolest looking amp I've ever seen. Welcome to instructables, I hope we see more of your awesomeness soon!</p>
<p>TNX MsSweetSatisfaction :) <a href="https://www.instructables.com/member/MsSweetSatisfaction/" rel="nofollow"><br></a></p><p>The sound is pretty good. Given the fact that my SUB is mono, I had bridge output. This is the L+ and R- so the output power is 100W.</p>

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