REL No. 31

The REL No.31 is a reference-level powered subwoofer designed to deliver exceptional speed, depth, control, and musical refinement in high-end stereo and home theater systems. It combines a 12-inch long-throw carbon-fiber driver with a sealed enclosure and a powerful NextGen 7 Class-D amplifier, providing deep bass extension while maintaining the precision and nuance expected from REL's Reference Series.

Designed as a more compact alternative to the larger No.32, the No.31 retains the same reference-level construction and engineering philosophy while occupying approximately 40% less cabinet volume. Its dual parametric filters, Reference Remote, and compatibility with REL's Line Array configuration provide extensive control and system flexibility, while the 12-coat Piano Black lacquer finish gives it a premium appearance.