This was a spontaneous project from several years ago. I acquired an old AC unit for cheap and decided to give it a once over before using it. It was supposed to be a basic cleaning; clean the filter, the condenser and evaporator fins and start using it because it was June and the heat… Read more »
Every so often a more mechanical than electrical device finds its way into my work area. A local machine shop had a pair of Makita GA-5020 angle grinders that had been used and abused and needed some work. One didn’t work and the other had some vibration issue. I found a nice exploded parts diagram… Read more »
A customer came to me wanting a custom sub box to fit into the back of his old Chevy Blazer. He had three Alpine SWR-10D2 subwoofers and and an Alpine MRX-M240 mono amp which is spec’d to output 2400W into 2 ohms. Finding Maximum Power Per Driver One of the first steps is calculating the… Read more »
When it comes to speaker design, the lowest frequency driver determines the volume and therefore overall size of the enclosure. The required volume is determined by the mechanical and electrical characteristics of the driver and whether or not the enclosure is ported or sealed. A tool I like to assist me for designing enclosures is… Read more »