most people have never heard anything outside of wal-mart/best buy/circuit city... some are just starting to find out names from local shops, but 90% of them carry only the main-stream brands such as kicker, mtx, jl, sony, alpine, ect.
and ill be honest, since joining this forum ive discovered dozens of more brands that are 10x better than anything main stream.. such as AQ, CDT, ID, ED, DD, RD and a few others.. i tell people my sub amp is an audioque 1200d, and they go.. "..wtf //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif...." and i just stand there