3-Way Bass-Reflex Tower Speaker System. The EF (Elliptical Form) Series feature Waveguide horns, PMD (Polymer-injected Mica Diaphragm) woofers and highest quality internal Monster Cable wiring for total enjoyment of digital movie sound and music sources, plus elegant Yamaha traditional piano finish cabinets.

High sensitivity and wide dynamic range for contemporary digital sources

Waveguide horn allows the sound field to be shaped and controlled for optimal spatial expression in home theater environments

PMD (Polymer-injected Mica Diaphragm) cone woofer combines high-performance materials and design for extreme accuracy

Highest quality internal Monster Cable wiring

High frequency response dome tweeter delivers clear, natural highs

Bi-wiring connectivity

Beautiful Yamaha piano finish with elegant elliptical form