S/550 vs S/812
The S/812's power @ 8ω is 800W against the S/550's 550W and its woofer 12" against 10". Both share low-frequency extension (19 Hz) and drivers (1).
AI-generated product photo — not official manufacturer imagery.
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About the S/550
The REL Acoustics S/550 is a compact yet powerful subwoofer that redefines the entry point to REL's Serie S line. It pairs a 550-watt Pure Class D amplifier with advanced CarbonAlloy drivers to deliver speed, scale, and dynamic authority. The redesigned 10-inch active driver features a pure carbon-fiber cap for razor-sharp attack and natural decay, while the 12-inch down-firing passive radiator with 60mm of travel extends response with authority. The S/550 is engineered for seamless integration with full-range loudspeakers and reference systems, offering both musical finesse and cinematic impact. It features REL's signature High-Level Neutrik Speakon connection for unmatched speaker integration, along with low-level RCA and XLR inputs. The subwoofer is available in Piano Black or Gloss White lacquer finishes with a standard cloth grille, and an optional premium wood grille is available. Airship Direct wireless connectivity is available as an optional upgrade. The S/550 is suitable for stereo pairs, line arrays, and dual-use music and theater systems.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Frequency Response
- From 19 Hz
- Power Handling
- 600W
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 550W @ 8Ω
- Amplifier Class
- D
Speaker Design
Driver configuration and enclosure design
- Driver Type
- dynamic
- Driver Size
- 10"
- Driver Count
- 1
- Enclosure Type
- sealed
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- RCA, LFE RCA, XLR
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 445 × 500 × 372 mm (W × H × D)
- Weight
- 31 kg (68 lbs)
- Available Colors
- Piano Black Lacquer, Gloss White Lacquer
Key Specifications
Power: 550W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions