What do 12's "sound" like anyway? Virtually every system Ive had people have said "wow that sounds like 12's (or 15's, or 18's etc)".... they never get it right.... seems nobody really knows what 12's or 15's are suppose to sound like these days anyway. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
If you are building a system to impress other people, meh. That's a bad idea to design a systme around, you'll be bored with the results much too soon. Build it to perform the way you want. If you want the deep output of 12's, Id suggest buying 12's, not buying 8's then trying to convince yourself and your friends that they play as low as 12'.