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REL ACOUSTICS · SUBWOOFERS

REL S/550

A front-firing 10-inch CarbonAlloy driver, down-firing 12-inch passive radiator and 550-watt Class D amplifier combine with stereo-pair and matched-model Line Array capability.

$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.

Free shipping Australia-wide. Change-of-mind returns are not accepted. This does not limit rights available under Australian Consumer Law.

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New product · Enquiry only · No online checkout

Official REL REL S/550 product view.

WHO IT IS FOR

Who it is for

Primary roles

  • For systems moving beyond Serie T/x in scale, control and installation ambition, without requiring the larger S/850 or Reference cabinet.
Official REL REL S/550 alternate finish or grille view.
Official REL S/550 alternate configuration media supplied by REL.
Official REL REL S/550 rear panel or construction detail.
Official REL S/550 detail media supplied by REL.
Official REL REL S/550 shown in a styled room setting.
Official REL room-setting image for REL S/550; it does not represent MSN Audio stock or a local installation.

ARCHITECTURE

Understand what each feature means in a complete system.

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: Class D, balanced-differential, bridged and monoblock amplifier connections require topology-specific instructions. Do not connect from a generic diagram.

02

Installation and integration

Maintain clearance for the down-firing passive radiator and ventilation. Use supplied REL hardware and matched S/550 units only if a Line Array is professionally designed. Measure and tune phase, crossover and level in the installed system.

SYSTEM / ROOM MATCHING

Will it fit the system you already own?

We consider connections, room context, installation and your listening priorities together before suggesting a configuration.

What to check for your system

  • Two-channel systems using High-Level or Low-Level input.
  • Cinema systems using RCA or balanced XLR LFE.
  • Systems that may later be evaluated for a matched-model stereo pair or Line Array.

What to keep in mind

  • -6 dB at 19 Hz is a product specification, not a prediction of response, decay or achievable level in a particular room.
  • Amplifier subtype and fuse values are withheld because current official sources conflict.
  • The manufacturer's 19 Hz at -6 dB figure is a specification, not a measured response in your room. Current official information differs on the amplifier subtype, so this page states only 550 W RMS Class D.

ROOM & INSTALLATION

What to confirm before choosing the final configuration.

TECHNICAL REFERENCE

Specifications grouped for useful comparison.

Manufacturer specifications

Acoustic configuration
Front-firing active driver; down-firing passive radiator
Active driver
10 in (250 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
550 W RMS Class D; subtype held pending REL confirmation
Dimensions (W × H × D)
445 × 372 × 500 mm (W × H × D)
Net weight
31 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 base single-unit configuration. Finish, accessories, pairing and any other configuration are confirmed in writing before an order is accepted.

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.

View Room & Bass Measurement

FAQ

Before you enquire.

What does the Australian price for REL S/550 cover?+

$6,299 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.

PRODUCT INFORMATION

See where the product facts come from.

Official REL Acoustics information was checked 23 July 2026. The Australian price includes 2-year standard Australian warranty. We confirm availability and expected delivery timing when you enquire.

AUSTRALIAN ENQUIRY & SUPPORT

Enquire about REL S/550

Considering the REL S/550? Tell us about your loudspeakers, room and current low-frequency setup. We’ll confirm Australian availability, answer your questions, and help you determine whether this model makes sense for your system and how it should be integrated.

REL AcousticsREL S/550

Do not include passwords, payment details, serial numbers or sensitive personal information.

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