I've been installing mobile audio systems for over 15 years, and the P3's are one of the best performing subs you can buy for the money. I've used them in multiple sealed and custom port/tune applications and have had great results every time. They are very deep, hard hitting, rumbly subs. They might not be really efficient on paper, but they graph great in comparison to similar subs. Personally, I've been much happier with the P3 line than Alpine R's and Kicker L7's. I'll have to admit that I really like strong bass (as do most of my customers). These may not be as musically accurate as some other subs, but most people buy these for their power handling and xmax for the price. If you're a SQ audiophile, these are probably too "boomy" for you. If you have lots of clean power, and love strong bass, they'll definitely make you grin.
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