A high-performance speaker with a passive x-over, the VR 21214 is housed in a bass reflex enclosure designed for fixed installation. It is loaded with two 12' woofers for extended low-frequency response and one 1.4' high-frequency driver coupled to a constant directivity horn. The VR 21214 is well-suited for use as a mid/ high unit in long-throw applications requiring high SPL. Paired with a subwoofer such as the compact HK AUDIO IL 115 Sub or IL 118 Sub, it excels at rendering live music. If you wish to configure larger, more intricate systems, you will find the HK AUDIO Fir Net Controller to be an invaluable asset.