out of these 3 subs
which is better?

12" rockford T2
15" rockford T2
12 JL W7
12 alpine type X

wut is better for SQ?
wut is better for SPL?

 

TF1 is better.

 

SQ = 12W7
SPL = 15" T2 (in a proper enclosure)

 

you had enough information to come to that conclusion?
you've tried all of that equipment in optimal enclosures for both SQ and SPL? in the same vehicles he's driving with the same amount of power as the O/P?

holy crap man, good for you.

 

okay, prove me wrong if what i typed isnt correct.

 

I can't, I don't have nearly enough information.

but, based ONLY on personal experience, I disagree with your choice of "SQ" sub

 

same here, so thats why i went with a general answer.

, there are people hitting 150's with W7's... does that make them an SQ sub? No. But generally speaking, they are

 

who?

 

Pete from team toxic bass awhile ago was doing mid 150's with two 13W7's in a wall

 

oh yah i think i seen the video on youtube.

i seen someone do mid 150's with some TF1 10's, without a wall. A few people actually. The video is on youtube as well