See full specs on Yamaha's own datasheet

Original Yamaha Waveguide Horn Design
The spherical waveguide horn design produces a virtually ideal spherical wavefront by minimizing constrictions in the throat area as well as discontinuities in the walls of the horn itself.
High-performance Drivers
It has been designed to provide the optimum balance of precise reproduction and high power handling capacity. The cone woofers feature extra-long voice coils and large magnets in a precision-designed magnetic circuit that allows extended cone excursion without a trace of breakup or distortion. The tweeters have large high-flux-density magnetic circuits and titanium domes for instantaneous response to even the most fleeting transients.
Rugged Acoustically-designed Enclosures
Enclosures are trapezoidal bass-reflex types constructed of state-of-the-art materials for minimum resonance, rich bass reproduction, and extended durability.
A Range of Mounting Options
Whether you want to mount on a wall, ceiling, or stand, there's a mounting option that will do the job.