It looks like the FSK-6P206 is sold on their site as "Standard" and "JBL." Both are 6.5-inches, so I am guessing that they're the same thing (Y'know, like how Chinese eBay sellers list a universal product but specify a certain car/year/model for the same exact thing, making hundreds of listings for one product that causes too much scrolling to get to the good stuff.)
I love good audio, and I've been listening to pfft pfft pfft bass for far too long. I'm going to try the "Standard" set and see how DIY I can get before having to take it to the audio shop.
~ANISSA