The original K240 Sextet with 6 passive radiators was designed when the engineers notice a big problem way back then - sources DID have some bass, but most cans were unable to reproduce it or very weakly. What happened more often than not, was that in final mixes, the bass was over emphasized.What are the differences between the current K240 versus the old Sextett/gold ring vintage K240?
Simply put, if audio quality is concerned, which one performs better?
From a manufacturing standpoint of time and resources, this was a bit costly and perhaps excessive. The simpler solution was instead of striving for bass fidelity, the mid-bass was hyped (since in the 60/70's, there wasn't much EDM dance music. This gave it a bass "punch" instead of true fidelity. Which at the time for most pop/rock was acceptable to many.