the 49.9 class is not an easy class to just jump into. good luck-
2 FI BTL 18's in a BHE wall. crescendo power. plays low.
I don't know a lot about car audio, but I know enough to know that there are some people in this thread that don't know that they don't know a lot about car audio.
Get taken down to funky town on MobileAudioForum.com.
Anyways to actually post in here OT...I for one like impressing people with small cone area. It surprises people more when you have a handful (or less) of small cone area woofers, vs say a couple of 15s or 18s. For all of the audio noobs out there, or people not into audio, 15 seems to be the break point in which they expect it to be loud.
My "big" build is going to consist of 4 12s on about 8k. It should get nasty, and still garner the response of "There's no way that's only 4 12s"