REL S/850 Subwoofer

REL S/850 Subwoofer

Coming Early October

All New REL Serie S Sound Reimagined

The new Serie S is a complete reinvention of one of our most iconic lines. Cabinets are wider and lower for greater presence. Drivers have been re-engineered for speed, control, and deeper reach. Amplifiers draw vast reserves of power from REL's Reference range, delivering authority with effortless ease. 

The result is bass that digs deeper, starts and stops faster, and integrates more seamlessly than ever before. Serie S offers not just output, but nuance, scale, and performance that transform both music and home theatre.

Serie S/850

Stunning Design Meets Raw Power

The REL S/850 stands as the benchmark of the Serie S line, with its design innovations shaping and elevating its three stablemates. Every improvement is sweeping and comprehensive, ensuring the entire Serie S family benefits from the advancements pioneered in the S/850.

The results are spectacular: it delivers incredible attack and output beyond even the former Carbon Special at the very limits of performance, yet with the precision, quietness, and clarity that produce true dynamic range. Lightning-fast transients, deep effortless bass, and tonal richness combine to deliver nuance that elevates both music and theatre.

Driven to Perfection

The S/850 is the result of relentless refinement. This progress comes not only from exploring newer, finer materials, but also from the thousands of hours of critical listening the REL team undertakes each year, experience that transforms raw engineering into musical and theatrical performance of the highest order. With every detail carefully considered, the S/850 delivers a level of power, nuance, and scale that redefines what’s possible in its class.

S/850 drivers now feature lightweight pure carbon-fibre center caps, replacing the solid aluminium moldings of earlier models. These caps reduce moving mass while stiffening the cone, resulting in explosive dynamics and the ability to resolve the quietest passages with delicacy and nuance. Feather-light yet rigid, they extend performance at both extremes, a hallmark of REL design.

Monoblock Slam, Class D Efficiency

The S/850’s amplifier delivers the slam of massive Class A/B monoblocks while harnessing the efficiency of a modern Class D output stage. Supported by a robust traditional power supply, it produces 850 watts of continuous output and can surge to 1,000 watts during demanding peaks, ensuring ample headroom for both music and theatre. Upgraded input filters, equipped with the same thin-film capacitors used in REL's flagship designs, introduce a new level of transparency and refinement previously unheard of in this class. Together, these advancements create dramatic improvements in clarity, sound staging, and sheer authority, an amplifier that blends brute force with finesse to anchor the performance of the entire Serie S line.

Analogue Filtered to Perfection

REL choose analogue because it is the only way to achieve truly natural sound. All REL input filters are 100% analogue, among the fastest ever offered in a subwoofer. At the core is REL's renowned High Level Input, which connects directly to the speaker outputs of your main amplifier. This doesn’t draw power; instead, it carries the full sonic signature of your system, allowing REL to blend seamlessly with your speakers, a quality reviewers have praised for decades.

For systems where High Level isn’t possible, the low-level input uses the same analogue filter circuit, available via both RCA and XLR connections, to deliver the speed, naturalness, and integration REL is known for. And in theatre or dual-use systems, REL uniquely allows High Level and .1/LFE to run together, so music benefits from natural integration, while movies deliver the full impact intended by the mix.

Wired For Sound…Wirelessly

Sometimes the best wire is no wire. Quality cables are a given in high-end audio systems, but there are occasions where it is impractical, unsafe, or unsightly to drape a cable across the room. REL delivers the ultimate solution with Airship Direct™, their optional wireless system that transmits wide-bandwidth, compound signals, carrying both High Level and .1/LFE simultaneously. Even with the scale and output of S/850, Airship Direct™ preserves the speed, transparency, and authority that define REL. It allows seamless transitions between music and movies without ever touching the controls, all from a single module that plugs neatly into the rear panel and stays invisible in your room. Simple, direct, uncompromised: Airship Direct™.

Serie S Line Array

REL Line Arrays are renowned for their sound staging and dynamics, performance that continues to set the standard in the high-end audio community. Like all REL Line Arrays, they’re designed to grow with the listener: start with a stereo pair, expand to four, and ultimately rise to six units for true floor-to-ceiling authority. Precision mechanical couplers tie each upper unit securely to the anchor REL on the floor, ensuring both stability and seamless performance.

The S/550 serves as the gateway into this world, offering a scalable path into Line Array performance. Stepping up, the S/850 brings greater scale, weight, and authority, proven at international shows to elevate finely matched systems. The effect is transformative: vocals gain striking presence, instruments bloom with natural dimension, and cinematic effects explode with realism. A true state-of-the-art experience, made both scalable and accessible.

NOTE: The REL Serie S/850 is supplied with a traditional cloth grill but a fetching Wooden slat grill is available as an optional extra (see drop down when ordering).