I have just purchased Definitive's Supercube 1 and am may be having problems with the way the speaker is set up. I have a denon 3803 as my receiver and I'm using the LFE input/output as the speaker connection (12 ft). Whenever I play music/movies I can hear a crackling sound from the speaker (kinda like when your tweeter is up too high). I don't believe my amp has enough power to blow the speaker but then again I'm a novice (what do I know) Here are the settings that I have on my subwoofer and speaker. Sub: Level = 50 (knob is straight vertical Up/down) High = knob turned all the way down Low = 80 Receiver: Front Speakers = small Sub = Yes Any ideas?