High-Definition 4" Bookshelf Speaker

Bring Definitive Technology’s legendary speaker technology to an infinite variety of environments with the ProMonitor 800. Boasting the heralded innovations and patented technologies of its much bigger brothers, the ProMonitor 800 is a versatile performer that fills any space with sensational sound, not with size.

• 4.5” BDSS Midrange
• 1" Aluminum Dome Tweeter
• Stand & Mount Options
• 4.5” Passive Bass Radiator
• Anti-Resonant Enclosures

 5-STARS. I was AMAZED by the sound that the Definitive Technology ProMonitor 800 produced. Even without a subwoofer, the sound was full and clear and had me shaking my head as to how such a small speaker could sound so large. The clarity was amazing and the bass was much deeper than expected. I will never purchase another brand of speaker again.

 Thrilling Performance

Experience Definitive Technology’s signature sound even in spaces without the room for a full-sized speaker system. Whether playing music, movies, or video games, ProCinema Series speakers and systems envelop you in simple-to-setup, thrilling audio experience.

 Small Size, Big Audio Footprint

ProCinema Series speakers and systems share the same legendary engineering and technology as the best Definitive Technology floorstanding loudspeakers, custom-designed for smaller spaces.

 Your Cinema, Your Way

With a wide array of mix-and-match speaker choices and an all-in-one system option, your high end home cinema system is as simple as a click away, or as configurable as you need it to be.

 What Obsession Sounds Like

We earned our award-winning reputation by crafting speakers of the highest performance and quality standards. Our signature sound delivers an immersive sound field, ultra-wide dynamic range, crystal clear highs, and thunderous bass, delivering thrilling experience to movie & music lovers like you.

 30-Day Returns

If you’re not 100% satisfied with your product, we’ll make it right.

 Experts Ready to Help

From product questions to order support, we’re committed to quality customer care.

 Always Innovating

We’re constantly creating & pursuing the latest audio technologies.

 Up to 5 Year Warranty

We stand behind our products with 1-5-year warranties.