I just got a Paradigm PW2200 sub, and when it comes out of standby it makes a "Pop" sound. Other than that it sounds phenomenal. I am just worried that this is not normal and I should exchange it for another one. It only does it when then sub's amp engages (comes out of standby) or if I unplug it and pug it back in (Which in turn engages the amp). Is this normal? No sub I have ever had does this. I have tried differnt outlets on seperate electrical circuits to no avail. It doesn't have anything to do with the receiver, cause it does it weather it is wired to it or not.