Monolith™ by Monoprice™THX® Certified Compact Satellite SpeakersA truly immersive experience from your home theater or gaming systemsThe Monolith™ THX® Certified Compact Satellite Speakers feature a high excursion concentric driver in a compact enclosure that delivers accurate performance down to 80Hz. The speakers are THX® Certified, ensuring an accurate and powerful listening experience as accurate to the source as possible. The Monolith THX® Certified Compact Satellite Speakers are quick and easy to setup ‑ simply connect it to any multichannel receiver or amplifier and pair it with a capable subwoofer for a fantastic cinema or gaming experience. These speakers are included in the complete M518HT THX® Certified 5.1 Home Theater System, allowing you to add additional satellite speakers for additional audio channels.THX® CertifiedCompact Form FactorWall Mounting KeyholeMDF EnclosuresEasy to Connect   COMPACT SATELLITE SPEAKERSThe M518HT Monolith™ THX® Certified Compact Satellite Speakers feature 4.5' concentric drivers, each with inset 20mm silk dome tweeter. The polypropylene cone has a thick NBR surround and the silk dome tweeter is equipped with a waveguide and neodymium magnets. The driver has been tuned for maximum performance and has a flat frequency response down to 80Hz. WALL MOUNTING KEYHOLEEach M518HT satellite speaker has a keyhole mount, so it can be easily hung on a wall with a single screw. For almost 40 years, THX has set the standard for the audio and visual fidelity of entertainment experiences. THX® Certification is a globally recognized assurance of uncompromising quality, consistency and performance. We blend art, technology, and the dynamics of real world listening and viewing environments to ensure products deliver the artist's true vision.THX® CertificationUsing industry standards and a proprietary testing methodology, THX engineers evaluate and certify the audio and visual fidelity of consumer electronics to ensure they deliver the optimal entertainment experience. In cinemas, at home, and on‑the‑go, your entertainment comes alive with THX.