S/812 vs S/550
The S/550's power @ 8ω is 550W against the S/812's 800W and its woofer 10" against 12". Both share low-frequency extension (19 Hz) and drivers (1).
AI-generated product photo — not official manufacturer imagery.
The REL Acoustics S/812 is a mid-to-high-end sub-bass system that combines REL's medium chassis concept with reference-level performance. It features a 12-inch ContinuousCast Alloy cone with carbon fiber backing for enhanced power handling and a matching 12-inch down-firing SuperProgressive passive radiator with 30mm additional linear travel. The 800W NextGen5 Class D amplifier represents a 45% power increase over the previous generation, enabling both profound theater output and deep 2-channel music performance. The all-analog PerfectFilter crossover extends deep bass below 30Hz while maintaining air and delicacy in midrange frequencies. The S/812 is capable of stacking in line arrays and delivers controlled, articulate bass with minimal box resonance. Its sealed enclosure and sophisticated protection systems make it suitable for both music and film applications.
Driver and acoustic performance characteristics
Amplification power output and characteristics
Driver configuration and enclosure design
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
Components that show up alongside the S/812 in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The S/550's power @ 8ω is 550W against the S/812's 800W and its woofer 10" against 12". Both share low-frequency extension (19 Hz) and drivers (1).
The S/850's power @ 8ω is 850W against the S/812's 800W. Both share low-frequency extension (19 Hz), woofer (12"), and drivers (1).
The S/812 (x2) matches the S/812 on power @ 8ω (800W), low-frequency extension (19 Hz), woofer (12"), and power handling (800 W).
Both turn up in the same documented systems.
The Metro XD's power @ 8ω is 750W against the S/812's 800W and its low-frequency extension 20 Hz against 19 Hz. Both share woofer (12") and drivers (1).
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