Your BL has the Chinese 12-spoke basket on it that hundreds of other model subs out there use. The frame they are speaking about is one Fi has not used yet, as it was recently purchased from the auction of Audiopulse patents. Or so the story goes. If you want to see the frame in question, look at an AudioPulse driver, not your BL.There's a car audio shop in CT that builds their own subs, and the baskets are identical to the baskets on my Fi BL's. They said Fi must be buying them from the same supplier, granted this was over a year ago, so things might be different now.
Never saw one in any New England vehicles, at least not that I know of.You guys never seen a big TC/Audiopulse sub before?