I just bought 2 DigitalAudio subs and I want to take out the Infinity subs that are in my car now. The thing is I've got to buy a way more powerful amp than I have now to push the 1100w rms a piece subs. So, what else would I have to do for that change?
you sure its 1100rms and not 1100 max power? Never heard of the company really but...if its 1100rms and you get a 2000rms+ amp you'll need to consider a better battery, alternator, and do a big 3. You're looking at spending a lot of money in batteries, alternator, wires depending what kind if 0awg then expect to pay a good amount. But it all depends how far you want to go.
the digital audio subs he is talkin about are made by audiobahn and it has to be 1100 max. just get a 800rms amp and call it a day. if its a good amp. 800 watts should be enough for you especially since you are buying noob equipment like digital audio.