Conclusion: This is the 4th set of Sony subs I put in my offshore boat since 2005. I have not found any brand of marine speaker that last more than 2 years when subjected to saltwater and these sound great matted to my 600watt amp. They are a good buy for under $100.
Summary: Excellent sound on a 27' boat. Tight punchy response. Clean design, good construction. Free air design allows myriad of mounting options, tho an unsealed storage area (of which there are many on a boat) seemed to really enhance the deep bass, clear a trace of muddiness and increase efficiency. Well developed product!
Pros: Attractive Design, Easy Setup, Great Sound Quality