i would see if u could get your hands on an 8 to try wortha shot as far as sealing it off losing you..it happens man lol ive had tenths of a db disapear on me and still have no clue where they went..i upped the reserve in my truck voltage went from drop to 12.9 to 13.4 clamping more power and i lost lol so i went back to the way it was and score was STILL down lol spl is a real bitch sometimes