How much would a box run me...lets sahy for the hdc3 15"With the hdc3 I'm sure you can reach full output with 2kw and get suprisingly nice results. It's 90% in the install. I went to single big sub setups on 2kw+ years ago and never looked back. If you get a properly built ported box, good amp, 1/0awg all arund, and an extra battery then you should be fine.
Or get a btl 15, throw it 2-3kw and call it a day //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif. Many spl subs can get retarded loud AND sound incredibly clean and musical with the right box //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
So they hdc3 copper can take 2k rms? or just the alum."I'm kinda thinking a pair of SSA ICON 12's or FI Q 12's now."
those are great for $250 a sub they take the power well and sound great - if you just want a cheap system you could go with 2 15" type R
http://cgi.ebay.com/PAIR-ALPINE-12-AUDIO-SWR-1222D-TYPE-R-2-OHM-SUB-WOOFERS_W0QQitemZ270426891228QQcmdZViewItemQQptZCar_Subwoofers_Enclosures?hash=item3ef6b2e3dc&_trksid=p3286.c0.m14&_trkparms=65%3A12|66%3A2|39%3A1|72%3A1205|293%3A1|294%3A50
pair of type R for same price as one of the SSA or FI
Sinlge AQ HDC3 from 10" to 18" range from $219 - 289 per sub but they can take the 2k pretty easily.
AQ 2200watt $389
http://www.audioque.com/aq/AQamps2200D.htm