One of the watershed moments in THIEL’s history as a transducer developer was creation of the mechanical coaxial driver. Each of the four speaker models that employed the concept had a different version, but the one used in the CS2.4 featured the most advanced magnetic system by far. Optimized venting, lower internal resonances, and greater linearity were possible because all magnets were neodymium instead of ceramic or combinations thereof.

The bass driver also received updates although smaller to stretch bandwidth and improve cosmetics.

Speaking of cosmetics, CS2.4 followed the CS1.6’s industrial design language with a satin-black exposed baffle, inset magnetic grille, and solid base with four threaded inserts for included stabilizer spikes or for mounting optional outriggers.

THIEL’s habit up to this point had largely been to develop every new product from scratch yet continue to build on decades of accumulated knowledge. However, CS2.4 was surprisingly similar in concept and execution to the CS2.3. Yet, the countless iterative improvements made for a vastly superior sounding speaker with greater clarity and linearity than its predecessor. Many people consider CS2.4 to have the best sounding bass of any modern THIEL as well.

CS2.4 was just about the perfect speaker. It was expensive enough to be good, but not enough to be scary. Its size was big enough to play loudly with deep bass, but proportions were ideal and style was svelte. It was sensitive and resolving enough to be enjoyed with a wide variety of equipment.

But those who upgraded to CS2.4 from an older model surely loved the rear-mounted binding posts most of all.