ive got a 15" DC level 4 ina 3.5 cubft ported box with a Sundown SAZ-1200D running it, with a Sundown 100.4 running seperate components and tweeters at the front.
Last time tested using old amp i was 142.2DB so im aiming for a good 143/144..
Thinking i might be better off going to a 12" as then the sub would have more space in the box and could result and louder scores, just gotta work it out a bit more