Eris E66 Active MTM monitors deliver smooth on- and off-axis response with more dynamic output than conventional two-way studio monitor configurations, thanks to their MTM (midwoofer-tweeter-midwoofer) design, which features a 1.25-inch silk dome high-frequency driver nested between two 6.5-inch Kevlar® low-frequency drivers. The nested MTM configuration facilitates both vertical and horizontal loudspeaker placement while providing improved spatial resolution with a much wider sweet spot than conventional designs. The weave and nature of the dual Kevlar® woofers helps break up reflected energy, so fewer delayed reflections reach the listeners ear, resulting in a less colored, more cohesive sound. These dual woofers operate in parallel within the same frequency range, acting to minimize phase displacement to provide optimal stereo imaging.