REL Acoustics S/850 Subwoofer

Experience the New Standard: The S/850

The S/850 is more than a subwoofer; it's the driving force behind the entire Serie S line, bringing Reference-level power and precision to an accessible class. Experience music and cinema with a new dimension of scale, where lightning-fast transients and deep, effortless bass combine with tonal richness to elevate every moment.

Engineered to Be Heard, Designed to Be Seen:

The aesthetic of the S/850 is refined with a longer, lower, and wider stance, giving it a dynamic presence in any modern space. Details like elegant, recessed stainless-steel handles and the option of a Premium Wood Grille underscore its commitment to form and function.

The Power of Finesse:

At its heart, the S/850 delivers 850 continuous watts of hybrid power, providing the brute force needed for cinematic impact while maintaining the finesse required for delicate musical nuance. The new drivers feature pure carbon-fibre centre caps, allowing for greater movement and rigidity, meaning explosive output is paired with exceptional clarity and quietness. The entire unit integrates seamlessly using our 100% analog High Level Input, ensuring the S/850 speaks with the same sonic voice as your main speakers—a quality long praised by reviewers.

The S/850 offers a scalable path to audio transcendence. Use it as a solo powerhouse, a stereo pair, or expand into a multi-unit Line Array for true floor-to-ceiling authority. And for pristine, wireless flexibility, the optional Airship Direct™ system delivers un-compromised sound without a single cable.

We endeavour to despatch same day for orders placed up to 1pm on available stock items (items with stock message "Usually dispatched within 24 hours"). Please remember to check with us first for a physical stock check if next day delivery is important to you. Any items with stock message "Usually dispatched within 72 hours" are items that we do not hold in stock but order in from the importer or manufacturer as soon as a customer order is received. Occasionally these may be delayed beyond 72 hours due to importer/manufacturer stock levels but we will inform you as soon as we can if this is the case.

UK Orders

We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Non Mainland locations - Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer and are not Free of Charge. Smaller items are delivered using Royal Mail 24 or special delivery. Larger items are delivered using a courier service such as DPD or UPS.

International Orders:

Due to the nature of our products and brand restrictions we are only able to send certain items internationally. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Hifisound or by the courier with a request for any further information required. Customs duties can apply for shipments to any countries outside of the UK depending on where the product you have bought is made. Customers are responsible for all taxes and duties incurred when the items enter their country.

Collect in Store or Home Install

At the request of the manufacturer some items cannot be supplied by mail order but you can click and buy them and then elect to collect them from our store or arrange a home install (if applicable). Applicable items clearly state that they are Collect in store or home install. Once ordered you will receive a message prompting you to contact us by phone or email to arrange for us to deliver and install or to reserve and collect from our store at your convenience, you will also be advised of the delivery time / stock availability as not all Home install / collect in store items are held in stock.