same box different sub

I wouldnt do it. The Clarion sub won't play very well with that small alpine amp. What dont you like about your current sub setup?

i would think a larger amp would help you with the sub/box setup you have now you are still underpowering the sub you have.   I would rather reccomend over powering a sub then underpowering one2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

You can make that Punch Pound with a better amp.boom, boom, boom boom....

i'd agree with the others saying you should invest in an amp. im sure that punch can handle more than just 140watts @ 2ohm, infact i would be suprised if it couldnt' handle anything under 200, * * *\ i just checked on that specific sub, and if its this one: http://www.crutchfield.com/S-52V9TEqRWj3/cgi-bin/ProdView.asp?I=575RFZ3812 I'd say if your not happy with your current setup, there isnt anything to lose if you buy the clarion, i dont know how well the quality will be in comparison, but if you arent happy with what you got, this will at least let you know how good a clarion sub performs. 1 thing though, chances are your current box setup, if its made to the specs of the RF 12" probably will not be as efficient for the clarion, each sub has its own displacement in the box and optimum enclosure size to work in, and chances are the 2 subs arent equal for displacement or enclosure specs, so that would require making a new box to get your moneys' worth. overall, if your not happy, i'd switch to a bigger amp and followup by buying a new sub for that amp. if you go to buy a new amp, have some goals set as to what you want in your stereo, something as general as SQ over SPL, and narrow it down to a certain powerhandling range, even box enclosure size could be important to you. the more things you want out of a sub, the easier it will be to narrow it down to something that should please you more than your RF. HTH. GL