winisd vs real world

[out4u]

So i currently run 4 sundown ev2 12's in 8.3 net cubes tuned at 32 on a hifonics brx 2400. i have been planning to sell my setup excluding the amp and get 2 sundown x 18v2's because i have a 2nd brx 2400 laying around that i fixed. so according to winisd (tuning kept the same) going from 4 12's on 2400 to 2 18's on 4800 would gain me 2-3 db, however for what it would cost me to switch to the 18's i could buy 4 more 12's and run 8 12's on 4800, in theory this would get me a 6 db gain vs 3 db gain for the same expense. my question is im using winisd to get these numbers so would this play out the same in the real world? ... HELP! (p.s no matter what it would be in the same vehicle so thats not a factor...97 ford explorer xlt)

[audiofanaticz]

Please put your topics in the proper section, the smd technical difficulty subforum is for site issues.

Thanks

[Efreakingt]

In theory going from 4 12 to 2 18, you'd be running the same cone area with twice the power. Going to 8 12 you'd double your cone area and your power. I'd say in theory the 8 12 setup would feel much louder and violent.