I will admit that I am still getting to know more about what seems like a great subwoofer. I have never heard or seen the sub in person, despite having just purchased two from owners in significantly distant places which will require two road trips. Both owners has their larger subwoofer upgraded with the mega woofers, I understand that their was yet smother upgrade offered later which consisted of a new driver and passive radiator ( OMG). Does anyone know where or who I can contact to purchase these? Is there even any stock left? Any additional info or history around this fascinating subwoofer would be appreciated. I would also like to know what owners are using for amps as there seem to be so many options nowadays. Thanks in advance.
