You then seen to have more knowledge than the average subwoofer consumer. The Alpines type rRs are rated 500 RMS and I have 600 RMS to power them. Do you figure these Alpines can handle this fine? Even cranked up?

Other question I have since you've serviced some subs, which do you think can handle more 600 RMS the best between the Rockford T112D4 and Kicker CVX12?

Thanks

 

Both drivers will take the 600rms just fine given the correct enclosure's.
Between the two I would take the CVX if you're going sealed.
Can likely find them cheaper also.

 

The Alpines are solid... probably a step up from the kicker and RF IMO... but as hardworker mentioned all of the above will probably do great for your application..

if it was up to me I'd be modeling the subs in the box space you have to check out Q and extension to make my final decision