The GH15M is a 2 way passive wedge shaped monitor loudspeaker built from a 15 Inch High Output Mid/Low Ribbed Cone Woofer and a 2 Inch High Temp Multi Layer Copper Voice Coil mounted on a Wide Dispersion High Frequency 1 Inch Horn Tweeter for the highest quality sound. These components are housed in computer engineered MDF Acoustic Enclosure to get the most out of your speaker. The low end is enhanced by a Tuned Bass Reflex Enclosure to maximize the boom. A steel mesh screen is installed to prevent damage to the speaker and horn. The GH15M is rated at 400 Watts RMS and 800 Watts Peak to get maximum volume from this cabinet. It is wired at 8 ohms to make it easy to daisy chain additional speakers. The Grindhouse brand of Pro Audio gear is an affordable alternative to high priced audio gear. Do not be fooled by the price! Low prices do not always translate to a cheap product. Grindhouse Speakers are high quality product and produce a superb sound. Give them a shot and you will be happy you did.