It was clear to us that we had to come up with an outstanding subwoofer to be associated with the three Utopia Be systems. This meant that we had to create a bass driver equal in terms of quality to the standard we reached with the pure Beryllium dome tweeter. That kind of challenge leaves no place for casual approach and demands finding innovating solutions. Maximum SPL power was not the primary goal, so our quest focused on the purest fidelity. This is why we decided not to rely on a large diameter subwoofer, but to work on a 8’’ (21cm) W cone, which offers the great advantage to be much lighter. The ratio between the tremendous power of the Multiferrite magnet and the moving mass is optimal, allowing the bass to be much more dynamic, and perfectly controlled.

The crossover between 21 WX and the N°5, N°6 and N°7 systems provides unmatched performance. The 21 WX can also be used to assist one or several 13 WS, especially below 60Hz where true low frequencies are omni directional. The other advantage of a smaller diameter cone is its ability to be mounted in confined space. The 21 WX works in a sealed box of 0,5cft (15 liters), where it will reproduce pure and efficient bass. It will reach its optimal linearity in a 1cft (30 liters) volume.

What is amazing about the 21 WX subwoofer is that it sustains comparison with much bigger diameter drivers thanks to its exceptional power handling. Correctly tuned in a 1cft (30 liters) bass-reflex enclosure, it will reach notes below 30Hz with commanding energy and it will make you seriously doubt its size…