Klipsch RW-12D now making an odd cracking noise. Cone is fine & the fuses on the back are fine. I suspect the internal circuit board / amp is giving way....again They have some sort of glue that seeps ...

Taking apart a circuit board or module and reconstructing its complete schematic is a valuable skill. We can see how someone designed circuitry to gain ideas that can be applied to our work. And ...

I have a question about a plate amp to power a home subwoofer. I tested the system and it works* When I plug the system in initially (with the power switch to "on") I get bass output. The amp powers ...