I have a RGS 15 with stock head and J&M 600W 4ch amp. I originally bought Polk Audio DB651, but they won't fit because of the grill thickness. I followed several suggestions on here and bought the 62.11i. I like the mid and highs and they sound great for the most part. My question is has anyone figured out how or what to do to get better base and it not punch/pop? Not sure how best to describe the base sounds, but I actually have to turn the music down so it doesn't sound so bad on certain songs. Not sure there is enough clearance on the grill tabs to allow the speaker to flex properly for the base, or I need to get some type of backing/insulation behind the speaker. Suggestions??