The SU631K4 is a 3-way in-wall surround sound speaker in the high-quality Kevlar Series, based on the best materials and featuring the most advanced technologies available.

The SU631K4 is tailor-made for in-wall surround sound, and incorporates unique features to ensure the best possible sound for the rear channels in a home theatre system.

Kevlar Woofer and Silk Dome
The Kevlar material is one of the very best materials for designing woofers. Utilizing the Kevlar material in combination with our silk dome tweeters, provides exceptionally clear and rich sound performance.

Paintable Frame and Grill
Both the frame and grille can be painted for perfect integration with the surroundings. We recommend using a spray paint. Separate the grille and the frame from the speaker and paint them individually. Then while the paint on the grille is still wet, gently blow air through the grille from the one side in order to clear all the small metal holes of paint.

Pivoting Tweeter
The pivoting tweeter can easily be directed toward the sweet spot in any listening area, providing the best possible listening conditions.

Adjustable Impedance and Tweeter Level
All Kevlar Series speakers are provided with switches for the tweeter and the impedance. The switches are placed on the front of the speaker, behind the grille, for easy post installation fine-tuning to any speaker set-up and listening environment.