I bought 2 8in subs and did not expect alot out of them. I was wrong, they are free air installed (hatch cover) and I am running 150w to the pair in parallel. I expected to have about the bass of a stock premium system. They are much louder than that. If you're chasing SPL dreams then these aren't for you, but for many people these will far exceed what they wanted (one would have sufficed for my application). Alpine amp gain is at 30ish, and subs were getting pushed hard at 80 gain. Guessing 100 to 150w range is where they are comfortable. UPDATE: I have bought a second pair for a different vehicle. These are in sealed boxes and have 150w RMS 2OHM. Pyle recommends a .88 cubic ft sealed box. Very loud between 200hz and 50hz. Sound level drops off below 45hz.
Rating: [5 of 5 Stars!]