REL Acoustics
No.36
Subwoofer

Relentless Power Meets Precise Control.

No.36 brings immense scale, deep extension, and complete control to the world’s most ambitious systems. Its 15-inch Pure Carbon Fibre driver and 1,000-watt RMS Class AB/D amplifier move effortlessly from the atmosphere surrounding a recording to the full physical force of music and film. The result is not simply deeper bass. It is greater dimensionality, more natural dynamics, and a system that feels entirely free.

1,000-watt Class AB/D amplifier
15” (380mm) Pure Carbon Fibre Driver
Dual Parametric EQ for Precise Room Tuning
Expanded depth and scale through Line Array compatibility

Technical Specifications …..

Type :
Closed box, front-firing driver

Active Driver Size & Material :
15 in. (380mm) long throw, carbon fiber cone with inverted carbon fibre centre cap

Passive Radiator Size & Material :
N/A

Low Frequency Extension :
-6dB at 15Hz in Room

Input Connectors :
High Level Neutrik SpeakOn, Low Level stereo RCA and XLR, LFE RCA, LFE XLR

Output Connectors :
High Level Neutrik SpeakOn, LFE RCA, LFE XLR, Line XLR, Line RCA

Power Output :
1000 watts (RMS) Ultra High-Current Power Supply

Amplifier Type :
Class AB/D

Wireless Capability :
REL AirShip Direct (sold separately)

Dual Parametric Filter ;
Yes

Finish :
Piano Black Lacquer, 12 Coats

Protection System :
Fully Electronic Set Safe
Yes

D.C. Fault :
Yes

Output Short :
Yes

Mains Input Voltage :
220-240 volts

Fuses :
8 Amp semi delay 230 volts operation

Supplied Accessories :
Mains Lead
Yes

Neutrik Speakon :
10 Meters (32’10”) Nominal: Yes

Interconnect :
–

User Manual :
Yes

In the interest of product development, REL Acoustics Limited reserve the right to vary these specifications without notice.

The Shape of Reference
No.36’s curvilinear cabinet is unique within the REL range, a design lineage that began with the original Gibraltar and reflects lessons John Hunter absorbed from his mentor, legendary Italian designer Franco Serblin. Its continuous curves are extraordinarily difficult to execute, particularly where the top surface tumbles gracefully into the rear corners. Inspired by the sweeping forms of classic wooden runabouts, the shape is more than beautiful; it reflects a longstanding REL belief that cabinet form, rigidity, and sound are inseparable.

Every visible detail reinforces that form. The sculpted grille follows the cabinet’s curves rather than interrupting them, its taut strings revealing rather than concealing the architecture beneath. Carbon fibre, used throughout No.36 for its performance properties, becomes a visual signature as well, framing the triple-plated badge and connecting the exterior design to the engineering within. Triple-plated stainless-steel handles inset into the cab

A Beating Heart of Carbon Fibre
To meet the demands of No.36’s 1,000-watt RMS Class AB/D amplifier, the cone structure has been reinforced and the suspension revised to permit greater travel while maintaining control. Carbon fibre locking shells and larger full-ring terminals transfer the immense current available from the amplifier with complete confidence.

The result is the authority and effortless scale of a 15-inch driver, delivered with the speed, control, and nuance that have defined REL Reference for generations.

1,000 Watts of Effortless Control
No.36’s 1,000-watt RMS Class AB/D amplifier was developed to give its 15-inch Pure Carbon Fibre driver extraordinary reserves of speed, control, and dynamic freedom. It delivers immense current precisely when the performance demands it, then settles instantly as the music returns to silence.

Its efficiency allows No.36 to deliver breathtaking scale without the excess heat and power consumption associated with a conventional amplifier of this output. More importantly, it maintains composure at every level, preserving texture, timing, and spatial detail even during the most demanding passages.

The result is power without spectacle: effortless authority when called upon and complete control at all times.

Wireless Needn’t Be a Compromise
With Airship Direct, There Is None.
Optional AirShip Direct delivers REL’s renowned High Level Input and .1/LFE signals wirelessly, with zero digital compression and no compromise in sound quality. High Level and .1/LFE can be used simultaneously, allowing No.36 to integrate seamlessly for music while delivering the full impact of film soundtracks, without the need for long cable runs.

Designed to plug directly into the rear panel, AirShip Direct keeps installation clean and virtually invisible while preserving the speed, transparency, and natural character expected from REL Reference.

Take Control of Your World
The REL Reference Remote is designed with the same attention to detail as No.36 itself. Its sculpted form sits naturally in the hand, while its substantial weight and beautifully finished controls convey the quality and permanence expected of a Reference product.

More importantly, it places every critical setup control exactly where it belongs: in the listening chair. High Level or Low Level gain, crossover, .1/LFE gain, phase, and Dual Parametric EQ can all be adjusted while listening to the system. Once setup is complete, the remote can be switched off to lock the settings and prevent accidental changes.

Dual Parametric EQ provides precise control across the bass range, allowing deep room resonances to be corrected while upper-bass excess can be gently trimmed. The result is deeper, cleaner bass and seamless integration with the main loudspeakers, all without leaving your seat.