Report "Pyle troubleshooting I have power to my speaker but no sound. I hooked up my tablet using the RCA ports on the back of my speaker, no sound even after adjusting the volume. Not even a crackle. I also a tempter to hookup my mixer. Works with my other speakers ( even the tablet) just not with the Pyle. My question is am I overlooking something or is there something wrong with my speaker?"