I dont like the Type-S. I would just keep the Type-R and maybe get another one. Why do you want to switch from type-R to Type-S? Thats going down a step. What kind of enclosure do you have the type r in now? What amp do you have on the Type-R?
why dont you like the type s i want to switch because i want 2 12s and the amp i have is a kx450.2 and the type r i have is dual 4 ohm and can only be wired at 2 ohms so i cant bridge it and its only gettin like 300 rms i have it in a sealed box im sure 2 type s will be louder.
Well I would still just keep the 1 Type-R. If its in a sealed enclosure try it in a ported one,it will sound alot better. I dont like the type-S because they sound terrible,IMO, and just feel cheap. Also you are underpowering the Type-R. Try giving it around 800wrms and it will sound great. If I were you,instead of buying 2 new subs id sell that amp and get one that will do like 700-800wrms.
you can get audiobahn A8000T's(or the A8002T, for different wiring) pretty cheap on ebay, they do a little under 800 wrms i believe...I had 4 at one point