Our new Centerline system isn’t based on a conventional approach. Indeed, the sound only comes from a unique source, avoiding problems inerrant of direct radiate in regular speakers when laid out horizontally. This creates a wave in the sound commonly called “wave front”, and improves overall efficiency. The proximity of the speakers in the horn allows the coherence to create the line array effect. Centerline will work for large gatherings or where an average and long throw system is needed. It is the perfect match to our subwoofers NAC-218 and NAC-221.