From my expierience Pioneer has never been the greatest( except for HU's), so I don't know about going downhill. And it has been in Walmart since as far back as I can think of as well.
I dont think so--->READ IT THIS... "Pioneer Electronics made sound pressure level (SPL) history at the 2003 dB Drag Finals held October 26 in Nashville with its Premier TS-W5000SPL subwoofer. Scott Owens, owner of Edge Audio in Phoenix, used nine Premier TS-W5000SPL 12-inch subwoofers in his 2002 Ford F-250 SPL truck to win in the Extreme 9+ category with 173.3 decibels, establish the SPL world record in the category with 172.2 decibels and defeat top SPL competitors in the "death match" competition with an average decibel level of 166.8."
People can get loud with subs but that doesn't mean they're all that great of subs power acoustiks have some large magnets and if given the right wattage, etc... they can get loud but i dont like the SQ on them same with L7's but im not sure...never heard many pioneer subs around my town
