he probably has the sony and a friend the jlif you put the 13w7 in a ported box then the jl would win by a long shot and not sound like crapby the way.. that jl is a $500+ plus sub. why are you comparing it to a $50 sub??
It's a rule of thumb, but I can think of many many instances where this isn't true. It's all down to what the speaker likes //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif1-ported is always louder than sealed [unless you make a seriously messed up box]2- sony xplod is garbage. period.
3- WHAT is full watts ? explain
It won't even be close. The sonys have less than 25% more cone area as it is, and assuming 3db is gained from porting, they still won't be close due to the Vd, which if someone doesn't know is Sd*Xmax (cone area x stroke). The W7 has many MANY times more Xmax than the sonys will have. That speaker moves over 30mm one-way, while the xplods might manage 10. This really isn't even a contest.the sony...yes they are budget...severe budget at that but they can be loud for $50 each
x2Well since no one actually answered you, let me just say this: the JL would probably die of laughter at being given this challenge.