I noticed today that every few minutes or so my speakers (adire kit51's) make a fairly loud crackle/pop noise. I'm not really sure whats causing it, cause one, it does it all at all volumes, and I switched sources and it still does it. So I'm assuming it must be the speaker. It almost seems like the capacitors in the crossover networks are discharging and making the pop, because it resembles the sound a speaker would make if you hooked a 9v to it real quick. So any ideas?