REL Acoustics No.36 Reference Subwoofer

Absolute Authority. Complete Control.

The REL Acoustics No.36 is a flagship subwoofer from REL's Reference Series, engineered for uncompromising high-end stereo systems and reference-level home theaters. Combining a 15-inch 12K Pure Carbon Fibre driver with a powerful 1,000-watt RMS Class AB/D amplifier, it delivers exceptionally deep bass, dynamic authority, and precise control while preserving the texture, timing, and spatial detail of music. Advanced room tuning, high-level connectivity, and compatibility with REL Reference Line Arrays make the No.36 a powerful foundation for the most ambitious audio systems.

Key Features

• 15-inch 12K Pure Carbon Fibre Driver:
  Features a 380 mm long-throw carbon fibre cone with an inverted carbon fibre centre cap. The refined cone structure and revised suspension improve rigidity, reduce unwanted cone noise, and allow greater excursion while maintaining speed, precision, and control.
• 1,000-Watt RMS Class AB/D Amplifier:
  Combines the high-current delivery of a traditional Class A/B power supply with the speed and efficiency of a Class D output stage. Its substantial power reserves deliver effortless dynamics and authoritative bass reproduction during demanding musical and cinematic passages.
• Ultra-Deep Bass Extension:
  Reaches a specified low-frequency extension of -6 dB at 15 Hz in-room, reproducing the deepest musical fundamentals and cinematic effects with exceptional scale and impact.
• Dual Parametric EQ:
  Provides two bands of parametric equalization for precise room tuning. Correct deep room resonances and reduce excessive upper-bass energy to achieve cleaner bass and seamless integration with the main loudspeakers.
• REL High Level Connection:
  The Neutrik SpeakOn high-level input enables integration with the main power amplifier, helping preserve the tonal character and timing of the primary loudspeakers for high-quality two-channel listening.
• Comprehensive Stereo and Home Theater Connectivity:
  Supports high-level, stereo low-level, and dedicated LFE connections through RCA and XLR interfaces. High-level and LFE inputs can operate simultaneously, allowing music and home theater systems to share the same subwoofer.
• Optional AirShip Direct Wireless Connectivity:
  Supports REL AirShip Direct for wireless transmission of high-level and LFE signals without digital compression, reducing the need for long signal cables.
• Reference Line Array Compatibility:
  Designed to work as a single subwoofer, a stereo pair, or part of a Reference Line Array. Its cabinet dimensions are compatible with earlier REL No.32 and No.25 Reference models, providing an upgrade path for existing systems.
• Precision Reference Remote:
  Allows adjustment of high-level or low-level gain, crossover, LFE gain, phase, and Dual Parametric EQ from the listening position. Settings can be locked after setup to prevent accidental changes.
• Premium Curvilinear Cabinet Construction:
  Features a sculpted cabinet inspired by classic wooden runabout boats, extensive internal bracing, and a luxurious 12-coat hand-rubbed piano black lacquer finish. The rigid construction supports acoustic performance while delivering a distinctive high-end appearance.
• Advanced Electronic Protection:
  Incorporates REL's Set-Safe electronic protection system, DC fault protection, and output short-circuit protection for reliable operation.

Feature Highlights

• 15-inch 12K Pure Carbon Fibre long-throw driver for precise, controlled bass reproduction.
• 1,000-watt RMS Class AB/D amplifier with a high-current power supply.
• Low-frequency extension to -6 dB at 15 Hz in-room.
• Dual Parametric EQ for accurate room correction and system integration.
• High Level, stereo RCA/XLR, and LFE RCA/XLR connectivity.
• Optional AirShip Direct wireless connectivity.
• Compatible with single, stereo-pair, and Reference Line Array configurations.
• Curvilinear cabinet with 12 coats of hand-rubbed piano black lacquer.

Technical Specifications

• Product Type:
  Active subwoofer, REL Reference Series.
• Enclosure Type:
  Closed-box, front-firing driver.
• Active Driver:
  15 inches (380 mm) long-throw driver with 12K Pure Carbon Fibre cone and inverted carbon fibre centre cap.
• Passive Radiator:
  None.
• Low-Frequency Extension:
  -6 dB at 15 Hz in-room.
• Amplifier Power Output:
  1,000 watts RMS.
• Amplifier Type:
  Class AB/D.
• High-Level Input:
  Neutrik SpeakOn.
• Low-Level Inputs:
  Stereo RCA and stereo XLR.
• LFE Inputs:
  RCA and XLR.
• High-Level Output:
  Neutrik SpeakOn.
• Additional Outputs:
  LFE RCA, LFE XLR, line-level RCA, and line-level XLR.
• Wireless Connectivity:
  Compatible with optional REL AirShip Direct.
• Room Equalization:
  Dual Parametric EQ.
• Remote Control:
  REL Reference Remote with gain, crossover, LFE level, phase, and Dual Parametric EQ adjustments.
• Finish:
  Piano Black Lacquer with 12 coats of hand-rubbed lacquer.
• Power Supply Voltage:
  220–240 V or 110–120 V, depending on market version.
• Fuse Rating:
  8 A semi-delay fuse for 230 V operation.
• Dimensions (W × H × D):
  743 × 541 × 816 mm.
• Net Weight:
  91.8 kg.
• Shipping Dimensions (W × H × D):
  987 × 768 × 932 mm.
• Shipping Weight:
  105.7 kg.
• Included Accessories:
  AC power cable, 10 m Neutrik SpeakOn cable, Reference Remote, two AAA batteries, grille, user manual, warranty information, and Line Array mounting hardware.

• Download REL Acoustics No.36 Product Brochure (PDF)