Conclusion: Sounds great it's almost a little too much. I have it paired with an Audiobahn. This thing out performs anything I've ever heard. High Quality sound, not too bad on price. Be sure to understand it does require I think an 11" or 11.5" diameter opening. You may need to do some cutting on your box. Otherwise highly recommended. You won't regret spending a little more.
Conclusion: I have one right now at 4ohms running on brutus brz 1700.1 @ 600 watts and this thing pounds really loud and very deep bass my box is 1.75 l ported, im planning to get another one and bring it down to 2ohm to get 1200 watts on the BRZ. i was debating in getting the 2ohm load to get to 1ohm at 1700watts but it might damage the Sub but 1200 for 2 sub should be more than adequate.
Conclusion: Heard one of these playing it sound quite wonderful the bass is clear and solid and sounds different to other subs. Talk about built it's the best and my most loved feature is the copper heatsink within to draw heat away from the huge voice coil so you can play longer and cooler unlike other brands
Conclusion: This piece of equipment is something worth buying I have not had any troubles with it and it hits nice and hard and clean..... I have two of these subs hooked up to a Hifonics BRZ 1700 watt RMS amp and it is just kicking no other....
Conclusion: I've had this sub for about 4 months now in a vented L port box, the cubic foot is correct and the Box is built to rockford fosgate specs, I installed the sub and it sounded great running on a thousand watt amp I wore the sub in easy and now when I try to crank it just a little bit the dang thing starts to smell up the truck!
Conclusion: The Rockford Fosgate T1D412's are beyond the BEST "BANG FOR YOUR BUCK" when it comes to speakers!! These bad boys will rock any car or truck in just about any box! At roughly 30lbs., they are fairly light weight and the conservatively rated 800 watts RMS is nothing compared to what this speaker can actually handle! Each speaker can easily handle up to 20% more than it's actual rated power!! I was running 2 T1D212's with 2 t1000-1BDCP's and THEY BUMPED!!!