How much of a difference is there between 12" and 15" subs?

[nissanrider06 10+ year member]

Ok, so say I used to have a BTL in my blazer on 2k and it wanged chung and hurt my buddy and shook my ear drums like they were gonna burst... Now How much of a difference would there be switching to a 12" BTL? In the same proportioned box? Is it a small difference? Is it a huge difference? With 1 15" sub it was perfect and im thinking if I build a better box I can really impress people at shows with a single 12???? I know this seems like a newb question thanks guys, Also when I had 2 12's and one died it was still pretty close I thought but cant remember to good....

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[SpeedEuphoria 10+ year member]

1x 12" is about 65% of the cone area of a 15" so its deff a difference

 

[ciaonzo 5,000+ posts]

About tree fiddy.

 

[CL1CKCLACK 5,000+ posts]

3 inches....

 

[Ksan 10+ year member]

Well dat lockness monster came up to me and I said what the hell do you want lockness monster and he looked at me and you know what he said.....I want about tree fiddy....i said hell no lockness monster you ain't getting no tree fiddy from me....get the hell out of here.

P.S. I really like the sound of 12"s. A 15" will hit a little deeper but it is not night and day.