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REL ACOUSTICS · SUBWOOFERS

REL S/850

S/850 pairs a 12-inch CarbonAlloy active driver with a 12-inch passive radiator, 850 W RMS amplification and REL's analogue High-Level and LFE architecture.

$7,799

2-year standard Australian warrantyAvailable to order in Australia. Stock and delivery timing are confirmed for each enquiry.Base single-unit configuration. Optional finishes, grilles, accessories, pairs and arrays are confirmed separately.
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Official REL REL S/850 product view.

WHO IT IS FOR

Who it is for

Primary roles

  • The current standard Serie S flagship, positioned above S/550 for systems being evaluated for greater scale and output potential.
Official REL REL S/850 alternate finish or grille view.
Official REL S/850 alternate configuration media supplied by REL.
Official REL REL S/850 rear panel or construction detail.
Official REL S/850 detail media supplied by REL.
Official REL REL S/850 shown in a styled room setting.
Official REL room-setting image for REL S/850; it does not represent MSN Audio stock or a local installation.

ARCHITECTURE

Verified features, explained in system context.

01

Connection context

Inputs: High-Level Neutrik SpeakOn, 2 × Low-Level RCA, LFE RCA, LFE XLR. Outputs: High-Level Neutrik SpeakOn, Low-Level RCA, LFE RCA or LFE XLR. Wireless: Compatible with optional Airship Direct. Connection guidance: Follow topology-specific instructions for Class D, balanced, bridged and monoblock amplifiers.

02

Installation and integration

Maintain clearance for the down-firing passive radiator and ventilation. Use supplied REL hardware and matched S/850 units only in a professionally designed Line Array. Tune phase, crossover and level after positioning and measurement.

SYSTEM / ROOM MATCHING

System / room matching notes

Connections, room context, installation and the listening objective are reviewed together before a configuration is proposed.

Fit to confirm

  • High-end two-channel systems using High-Level or Low-Level input.
  • Cinema systems using RCA or balanced XLR LFE.
  • Professionally designed matched-model stereo-pair or Line Array systems.

Known boundaries

  • -6 dB at 19 Hz does not describe the customer's actual in-room response or decay.
  • Line Array capability is not a recommendation for quantity or placement.
  • Final integration requires phase, crossover and level tuning in the installed system.

ROOM & INSTALLATION

Conditions to establish before specification.

TECHNICAL REFERENCE

Specifications grouped for useful comparison.

Manufacturer specifications

Acoustic configuration
Front-firing active driver; down-firing passive radiator
Active driver
12 in (305 mm) long-throw CarbonAlloy driver
Passive radiator
12 in (305 mm) Carbon/Carbon flat-cone passive radiator
Manufacturer low-frequency extension
-6 dB at 19 Hz
Amplifier
850 W RMS Linear Class D
Dimensions (W × H × D)
488 × 410 × 540 mm (W × H × D)
Net weight
42.5 kg
Manufacturer-listed finish
Piano Black Lacquer or Gloss White Lacquer, 8 coats

EXTERIOR & CONFIGURATION

Confirm the supplied product, not just the model name.

Finish

Current finish options are confirmed during the enquiry. Official media identifies the model but is not an inventory promise.

Supplied configuration

The displayed price is for the reviewed base single-unit configuration. Finish, accessories, pairing and any other configuration are confirmed in writing before an order is accepted.

ADJACENT ROLES

Compare architecture before choosing a model.

Official REL REL S/550 product view.

REL ACOUSTICS · SUBWOOFERS

REL S/550

S/550 combines a 10-inch CarbonAlloy active driver, a 12-inch passive radiator and REL's analogue connection architecture for high-quality music and cinema systems.

$6,299

2-year standard Australian warrantyAvailable to order in Australia. Stock and delivery timing are confirmed for each enquiry.Base single-unit configuration. Optional finishes, grilles, accessories, pairs and arrays are confirmed separately.
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MEASUREMENT REMAINS INDEPENDENT

Establish the room evidence before prescribing a product outcome.

Room & Bass Measurement can identify the bands and decay behaviour that deserve attention without presuming this product, a quantity or a placement is the answer. The service does not require a product purchase.

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FAQ

Before you enquire.

What does the Australian price for REL S/850 cover?+

$7,799 is the base single-unit price with a two-year standard Australian warranty. Optional finishes, grilles, accessories, pairs or arrays are confirmed separately. Availability does not imply local stock or a fixed delivery time. These warranty terms do not limit statutory consumer guarantees under Australian Consumer Law.

SOURCES & REVIEW

Product facts remain traceable.

Official REL Acoustics source material checked 23 July 2026. The published Australian price is paired with 2-year standard Australian warranty. Availability and expected delivery timing remain subject to order confirmation.

AUSTRALIAN ENQUIRY & SUPPORT

Australian enquiry and support path

Ask about availability for REL S/850, then share the system and decision in front of you. MSN Audio will confirm the supplied configuration, Australian support path and whether this product is relevant.

REL AcousticsREL S/850

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