M8S - 8" 140 Watt 4 Ohm Mid-Range Shallow Mount Speaker*Sold as each not in pairs. Massive Audio"s "MS Series" Shallow Mount Mid Range Speakers along with its "M Series brethren" are all engineered in the USA to perform at perfectly selected mid range frequencies with high sensitivity to enhance your listening experience. The "Slim Series" even feature a special aluminum heat sink neodymium magnet on top of the speaker to help dissipate extra heat helping to keep the voice coils cooler for extended