Yeah, I knew you'd get it, but then spritzer went and was like "yeah, I been thinking about that"...which of course meant the concept had some serious merit behind it, even if it was an "out there" concept (Jude -- take note -- that is an "out there" concept; iPodPJ's was beyond "out there"). Actually, the concept of Isobaric would require two bass drivers, so at least 3 drivers, total. link