The outside of the case is made from solid maple and the top panel is 1/8" thick aluminum painted black. I finished the wood with three coats of waterbased polyurethane.
I enjoy the easy, tidy lines and the stark contrast in between the painted black parts and the warm natural wood and amber glow from the meters.
The project uses an LM4780 dual channel chip amp that can put out around 50 watts rms into 8 ohm speakers. Not very powerful, but the speakers I constructed this for don't require a lot of power.
I designed and made the PCB for the chip amp, but ended up renovating the design and making a new circuit board when I made a lot of errors on the first one. All part of the enjoyable!
Likewise inside the amp case is another circuit board that has an active filter that eliminates the bass. The amp is more than efficient in complete range output, however I don't desire any radio frequencies going to the little speakers and the active filter does that.
I constructed this amp for these speakers:
NOTE: The chip amp I utilized for this is outdated now, however I have a couple of from when I was much deeper into electronic devices 15 years back.
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