Every time I suspend, power off, or turn on my PC, my speakers go POP BANG POP, sometimes loud enough to scare my cats outta the room, depending on where I left the volume knob. I'm using a Sound Blaster Audigy and the regular old analog line out to my Pioneer amp and KLH tower speakers. But I know it isn't the amp or the speakers, because at one point I had a separate amp/speaker combo plugged into the REAR line out at the same time, and it had the same pop-bang-pop noise every time I powered on the PC. The noise doesn't happen when they aren't plugged in.
So is there any way I could fix this old beast of a sound card to stop it sending those loud bass signals out the analog wire? Like giving it extra grounding or EMI insulation or something? And if that's not possible, could I use the SPIDF digital out to a better digital amp or what I think is called DAC (which the Pioneer is not, it only has coax inputs, I'd have to buy one)? Since the output would be digital, would there be any difference between using the motherboard's built-in SPIDF out, and using the Sound Blaster Audigy SPIDF out (they are both coax)?