Infinity PRIMUS II 250

The PRIMUS II 250, not to be confused with the PRIMUS PC250 bookshelf model, is an entry-level Infinity floor-standing speaker. While higher-end models, like those in the Cascade series, utilize CMMD (Ceramic Metal Matrix Diaphragm) technology for advanced sound accuracy, the PRIMUS II 250 features a simpler MMD construction.

The loudspeaker contains dual 5-1/4" low-frequency drivers and a 3/4" tweeter, achieving a bass-heavy frequency response range of 19Hz-20kHz. The PRIMUS II 360 is a step up, offering a 3-way design with larger woofers and greater overall power capacity.