Subwoofers — Rel Acoustics No.31

The No.31 is a powered subwoofer from REL Acoustics, a British manufacturer with a considerable reputation for serious subwoofer engineering, built with exceptional bass extension and substantial internal amplification. The No.31 brings REL's flagship-tier engineering to serious dedicated bass reinforcement.

Key specs that matter

Rated response reaches down to an exceptionally deep 17Hz. Internal amplification delivers a substantial 1,000W. At 63.8 x 43.5 x 72.0cm and 71kg, the No.31 represents a serious subwoofer commitment consistent with REL's flagship-tier engineering ambition.

Sound and use context

Expect extraordinary bass extension and authority reflecting the exceptional 17Hz reach combined with the substantial 1,000W amplification, consistent with REL's considerable reputation for musically integrated, high-end subwoofer engineering.

Pairing

As a self-powered subwoofer, the No.31 connects to a preamplifier, integrated amplifier or AV receiver's subwoofer output directly, working alongside a broader main-speaker system for deep, controlled bass extension.

Alternatives

REL Acoustics' own Carbon Special Black Label and T/9x sit within the same broader subwoofer catalogue at more moderate scale, worth comparing directly to find the right REL tier.