REL Acoustics 212/SX

212/SX by REL Acoustics

Overview

The 212/SX by REL Acoustics is an exceptional subwoofer that pushes the boundaries of bass performance. Building on the legacy of the legendary 212/SE, the 212/SX incorporates upgraded alloy drivers, carbon fiber blades, and an advanced passive radiator system to deliver unmatched low-frequency impact, precision, and clarity. With its 1,000-watt NextGen 5 Class D amplifier and floor-shaking bass extension down to 18Hz, the 212/SX sets a new benchmark in subwoofer performance, making it the ideal choice for discerning audiophiles and home theater enthusiasts alike.

Purpose

The 212/SX is designed for those who demand the deepest, most precise bass without compromise. Whether you're building a high-end home theater system, outfitting a professional sound studio, or seeking to enhance the audio performance in large spaces, the 212/SX delivers superior low-frequency response, unparalleled control, and extreme power output. This subwoofer is engineered to complement both music and movies, offering a seamless and dynamic listening experience in any environment.

Design

The 212/SX features cutting-edge engineering that enhances both performance and durability. It houses dual 12” active drivers, each equipped with lightweight carbon fiber blades that are securely attached to the rear of the alloy cones, reinforcing their strength and minimizing distortion. These drivers offer an additional 12mm stroke for greater movement and deeper bass reproduction, while the updated suspension geometry ensures smoother operation.
The advanced passive radiator system includes a high-powered rear passive unit and a down-firing passive radiator with a carbon/carbon flat cone, further enhancing bass extension and control. This innovative design allows the 212/SX to deliver a truly immersive audio experience, maintaining precision even in extreme output ranges.

Key Features

• Dual 12” Active Drivers:
  • Featuring Continuous CastAlloy™ cones and carbon fiber blades, these drivers offer enhanced strength, quieter performance, and extended bass reach.
  • 12mm additional stroke and updated suspension geometry ensure improved bass depth and driver control.
• High-Performance Passive Radiators:
  • Rear passive radiator with Continuous CastAlloy™ cone and down-firing passive radiator with carbon/carbon flat cone deliver an ultra-deep, controlled bass response.
  • Low-frequency extension down to -6dB at 18Hz provides exceptional depth and clarity.
• NextGen 5 Class D Amplifier:
  • 1,000 watts RMS of power ensures extreme grip and control, even at high output levels, preventing distortion in the deepest bass frequencies.
  • Extreme power handling ensures superior reliability under heavy use.
• Versatile Connectivity Options:
  • Includes High Level Neutrik Speakon, Low Level RCA, and LFE RCA/XLR inputs for flexible system integration.
  • Dual outputs for LFE (RCA or XLR) and High Level allow for easy multi-subwoofer setups.
• Wireless Capable:
  • Add the REL AirShip II for wireless performance, maintaining the same high-fidelity sound without the need for cables (sold separately).
• Premium Aesthetic Design:
  • Piano black lacquer finish ensures a sleek and sophisticated appearance that complements any high-end audio system.

Performance

• Power Output:
  • 1,000 watts RMS (NextGen 5 Class D amplifier).
• Frequency Response:
  • -6dB at 18 Hz for immersive, deep bass that fills the room with rich low frequencies.
• Impedance:
  • Nominal impedance of 8Ω, making it compatible with a wide range of amplifiers.
• Protection System:
  • Includes D.C. Fault, Output Short, and Fully Electronic Set Safe to ensure long-lasting reliability.

Dimensions and Installation

• Overall Dimensions:
  • 14 1/4” W x 33” H x 20 1/4” D (362mm x 838mm x 514.5mm)
• Weight:
  • 128 lbs (58 kg) for a solid, high-quality build.
• Finishes:
  • Available in Piano Black Lacquer, offering an elegant look that blends seamlessly with any décor.