Using a bass-reflex enclosure, the speakers contain ports in the speaker cabinet to control the movement of air, resulting in less resonance and improved bass efficiency. The speakers include a 6.5" woofer with Ribbed Elliptical Surround, which lowers distortion, as well as a 1" chambered aluminum dome tweeter, located above the woofer. The woofer and tweeter are also integrated using a Convergent Source Module (CSM), to ensure accurate sound as well as an extensive soundstage. In addition to this, the speakers also have magnetic shielding to ensure that they can be positioned near other A/V devices without any risk of interference. The CB-20 can also be paired with other speakers in the Energy CB Series for optimal acoustic blending, making them ideal for use in surround-sound configurations.