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REL S5 SHO 550W 12" + 12" Subwoofer


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Special Order Item: Ships in 5 - 10 days

Quick Overview

The S5 is the flagship subwoofer from REL's Serie S range.

Boasting dual 12" drivers, one active and one passive, the S5 delivers powerful and true bass right down to 20Hz. This is an excellent performer and is guaranteed to impress whether you integrate it into a home theatre or stereo system.

Product Number: S5SHO
Brand: REL
Model Number: S5SHO
Condition: New
Warranty: 2 Years

REL S5 SHO 550W 12" Subwoofer

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  • REL S5 SHO 550W 12" Subwoofer
  • REL S5 SHO 550W 12" Subwoofer
  • REL S5 SHO 550W 12" Subwoofer
  • REL S5 SHO 550W 12" Subwoofer
  • REL S5 SHO 550W 12" Subwoofer
  • REL S5 SHO 550W 12" Subwoofer
  • REL S5 SHO 550W 12" Subwoofer
  • REL S5 SHO 550W 12" Subwoofer

The new S/5 SHO. The Serie S Flagship

S/5 SHO represents the pinnacle of mid-level sub-bass systems, combining REL's most innovative engineering to produce reference-quality sound in a stunningly sophisticated package.

Key Features:
- Closed Box, Active & Passive Drivers
- 12" active driver, 12" Passive Radiator
- 550W RMS Power from a NextGen2 Class D Amplifier
- High Level, Low Level, & LFE Inputs
- Incredibly flat response right down to 20Hz at -6dB
- Beautifully finished in 8 coats of lacquer
- Compatible with REL's LongBow wireless transmitter

Power and Performance

The S/5 SHO exceeds the mandate for mid-level subwoofer models and crosses into near reference-quality. The S/5 SHO’s 15” Continuous Cast Alloy Cone Driver and carbon passive radiator produces exceptionally low bass with tremendous impact and speed. Its NextGen2 550W digital amplifier makes large scale, high-end 2-channel systems and grand theaters a perfect pairing. Medium to grand rooms are more than appropriate as the scale is very large, speed is exceptional, and attack and slam are visceral.

SHO refers to Super High Output, made possible by a new 3-stage limiter REL's engineers created after extensive testing revealed that much higher output, higher gain and higher performance could be unlocked. The result is a new design that is capable of more than doubling its predecessor’s output. Specify the S/5 SHO, singly or in pairs, when your system is of exceptionally high quality, and your speakers and room can support high levels of dynamics and bass extension.

Smooth Speed & Slam - Continuous cast alloy bass engine

The S/5 SHO’s driver features an all-new alloy cone structure that takes REL's mid-level product to a performance level that exceeds their reference products of only a few years ago. By reducing moving mass with a balanced approach to design, the engineering team was able to produce far more speed than prior designs. By carefully adjusting key parameters, they were able to increase the self-quieting key to a high-end component’s ability to resolve space and inner detail. Improvements in design translate into enhancement in your entire system.

Sound Beyond Its Size - Carbon passive radiator

The S/5 SHO uses a special carbon/carbon passive driver that is stiff, lightweight and incredibly well-behaved. REL's approach to passive design results in performance more akin to a variable ratio driver size. On an S/5 SHO, think of it as a sliding ratio design wherein the S/5 SHO begins as an ultra-fast 12” sealed box design and, as more power and deeper bass is demanded, the S/5 SHO gradually morphs into the power and output of a 15” design.

Fast, Extended Lows - NextGen2 550W digital amplifier

Beyond their proprietary drivers, the performance of a REL is determined by the brand's unique input filters and amplifiers. S/5 SHO uses a simple filter-type that is very fast—about 8 milliseconds in group delay– to cross out unwanted higher frequencies to the driver. This speed and REL's carefully sorted filters allow for seamless blending of subwoofers with the main speakers. RELs do not include a high pass filter to cross out bass from the main speaker because to do so would generally produce more unwanted effects than the minor benefits such a design confers.

S/5 SHO’s power amplifier is a powerful NextGen2 550W digital amplifier. This design has powered thousands of RELs and has proven exceptionally reliable and very fast with deep, extended lows—it provides a perfect mate to the new driver.

LongBow Wireless Connectivity - Freedom

LongBow permits very fast, uncompressed bass to be sent wirelessly within the same room approximately 45 feet (somewhat dependent upon room clutter). REL have selected an uncompressed format as it results in natural, quick delivery compared with conventional wi-fi or Bluetooth systems. Because it is a REL, they developed LongBow with both high level (or low level with crossover intact) AND LFE channel delivery so that REL Theatre Reference performance can be maintained even when using their wireless delivery system.

Learn more about the LongBow Wireless Transmitter here

Positioning Your REL Subwoofer

The correct placement of your REL can drastically enhance its performance and transform your listening experience. So, REL Acoustics created a guide to help you get the most out of your subwoofer and showcase how multiple subwoofers can be used to provide breathtaking 2-channel scores and truly theater-quality 3D sound.

Use the REL Room Setup tool here

From the Serie S

Serie S combines a higher performance level than REL has ever set out to deliver within their mid-level range, able to elevate higher-end systems in medium to large rooms. When REL began designing Serie S, they set out, quite literally, to revolutionize subwoofers. They developed ultra-lightweight and extremely rigid Continuous Cast™ alloy cones for power and crisp clarity. They leveraged passive drivers to extend the scale beyond the cabinet size, and they developed zero-compression embedded wireless for freedom of placement and a clean visual aesthetic to match its sophisticated finishes.

REL encourages you to experience the sound and beauty of Serie S, it will change the way you hear music and experience theater.

REL Acoustics

"We make subwoofers. That’s it. Nothing else. No distractions. Nothing to steal our focus. No kidding ourselves that we can be good at everything. No trying to conquer the whole world. We just do our best to conquer our bit of it."

Subwoofer Specs

Type: Front-firing active driver, down-firing passive

Active Driver Size & Material: 12", 300mm long-throw, Continuous CastAlloy™ cone structure, cast chassis
Passive radiator size & material: 12", 300mm Carbon/Carbon flat cone structure, steel chassis

Low-frequency extension: -6dB at 20 Hz
Gain Control Range: 80dB
Phase Adjust: 0 - 180 degrees

Input Connectors: High-Level Neutrik Speakon, Low-Level stereo RCA, LFE RCA, SMA for wireless antenna

Power Output: 550 watts (RMS)
Amplifier Type: NextGen2 Class D

Wireless Capabilities: Longbow (Optional, sold separately), Zero Compression, Individual discrete D/A and A/D Encoders


Protection System

Fully Electronic Set Safe: Yes
D.C. Fault: Yes
Output Short: Yes
Mains Input Voltage: 220-240 volts
Fuses: 5 Amp 220 volts operation, 9 Amp 120 volts operation



Dimensions (WxHxD): 445 x 456 x 507 mm
Net Weight: 31.6 kg
Finish: Piano Black/White Lacquer, 8 coats


Supplied Accessories
- Power Cable
- 10m Neutrik Speakon Cable
- User Manual

2 Years
All REL Acoustics subwoofers are covered by a 2 Year Australian warranty.

To register your REL subwoofer visit the Warranty Registration page at Synergy Audio here.

If you experience any issues with this product please don't hesitate to contact us.
How much does delivery cost?
Nothing! We offer free post on all orders to anywhere within the Australian mainland and Tasmania.

Can I pick up my purchase from your store?
Yes. You can usually pick up your order from one of our stores. We recommend that you contact us first to ensure your order is ready for collection.

What happens if I'm not happy with my product when it arrives?
We offer a 30 day 100% satisfaction guarantee on all of our products! If your order arrives damaged, faulty or not quite as you expected, please contact us and we will do everything we can to fix the situation.

Please visit our FAQ page for answers to other frequently asked questions or contact us if you have any other questions or comments.
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