Reference subwoofer with a more compact form factor than the No. 32.
12" (300 mm) active carbon fiber front driver, 2.5" excursion
900W RMS NextGen Class D amplifier
Frequency response: down to 17Hz (-6dB)
Dual parametric filters (A and B settings) with included remote control
Compatible with REL AirShip II wireless system (optional)
Inputs: Speakon, RCA, and XLR stereo + LFE
Outputs: Speakon, XLR LFE, and XLR line
Line array ready (up to 3 units)
If you make the payment via bank transfer, you will receive an extra 3% discount on your order.
Would you be interested in trading in a device when purchasing this item?
The REL No.31 is a reference-grade subwoofer designed for discerning listeners who demand the performance of the legendary No.32 but in a more compact form factor. Sharing the same amplifier and filter architecture as its larger sibling, the No.31 delivers uncompromising low-frequency response, exceptional control, and exquisite design in a space-efficient format.
Compact Reference Design
Scaled-down version of the flagship No.32.
Maintains the refined aesthetic and acoustic architecture of the Reference Series.
Ideal for high-performance systems in limited spaces.
Exceptional Acoustic Performance
12” (300 mm) pure carbon fiber driver with 2.5" linear excursion.
Frequency extension down to 17 Hz (-6 dB).
Massive 13 lb magnet structure with a 3” voice coil ensures dynamic linearity at high output levels.
Power & Control Without Limits
900 W RMS NextGen Class D amplifier, derived from the No.32.
LimitLess™ Limiter technology allows full output with no audible compression.
Dual parametric EQ filters (presets A and B) for precise room tuning.
Purposeful Design
String grille design eliminates airflow turbulence and coloration.
Curved cabinet construction maximizes internal rigidity and reduces resonance.
Supports vertical line array configurations (up to 3 units) for immersive full-range sound with vertical image reinforcement.
Comprehensive Connectivity & Premium Remote Control.
Inputs:
Neutrik Speakon (High Level)
Stereo RCA and XLR (Low Level)
LFE RCA and XLR
Outputs:
Speakon (High Level)
XLR LFE and Balanced Line Out
Compatible with REL AirShip II wireless module (optional)
Includes Reference Remote Control with full access to gain, crossover, phase, and dual EQ settings
Enclosure Type: Sealed, front-firing
Active Driver: 12” (300 mm) carbon fiber cone, 2.5” excursion
Passive Radiator: None
Frequency Response: 17 Hz (-6 dB)
Amplifier: 900 W RMS, Class D
Inputs:
Neutrik Speakon (High Level)
RCA Stereo & LFE
XLR Stereo & LFE
Outputs:
Speakon
XLR LFE and Balanced Line Out
EQ Filters: Dual parametric (Presets A & B, remote adjustable)
Wireless Capability: Compatible with REL AirShip II (optional)
Protection Circuits: Full electronic protection including short circuit and DC fault
Mains Voltage: 220–240V / 110–120V (market dependent)
Fuse Rating: 7A (230V) / 15A (115V), slow blow
Dimensions (W × H × D): 638 × 435 × 720 mm (25 1/8" × 17" × 28 1/2")
Net / Shipping Weight: 52 kg / 71 kg
Finish: 12-layer hand-polished Piano Black lacquer
Included Accessories
Power cable.
10 m Neutrik Speakon cable.
User manual.
Reference remote control.
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