2-Way Acoustic Suspension 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.
2-way enclosures12" drivers2" tweeters with titanium diaphragmsFrequency response: (-10dB) 60Hz-16kHz350W program handling/700W peakSensitivity: 97dB17"W x 25"H x 13"D each43 lbs.