REL 212/SX Subwoofer

🧾 Overview / Summary
The REL 212/SX is a powerful reference-class subwoofer designed to energize large listening rooms with effortless, musical bass. Featuring dual 12" active drivers and dual 12" passive radiators in a gloss piano black cabinet, it delivers fast, deep, and tuneful low frequencies with 1,000 watts of NextGen 5 Class D power.

✅ Key Features
✅ Two front-firing 12" active drivers and two 12" passive radiators
✅ Long-throw die-cast aluminum chassis for precise control
✅ Reaches 18 Hz at -6 dB for ultra-deep bass
✅ 1,000 watts RMS NextGen 5 Class D amplifier
✅ Phase switch: 0°, 180°, or off for better integration
✅ Wireless-ready with REL Airship (sold separately)
✅ Fully electronic SET-SAFE™ protection system
✅ Gloss Piano Black finish with premium build quality

📊 Technical Specifications
Parameter Specification
Type Two front-firing active woofers, one down-firing and one rear-firing passive radiator
Active Drive Units 12 in. (300 mm), long-throw, die-cast aluminum chassis
Passive Radiators 12 in. (300 mm), die-cast aluminum chassis (x2)
LF Response in Room 18 Hz at -6 dB
Input Connectors High Level Neutrik Speakon, Left & Right Low Level RCA, LFE RCA, LFE XLR
Gain Control Range 80 dB
Power Output 1,000 watts (RMS)
Phase Switch Yes, 0° or 180°
Amplifier Type NextGen 5 Class D
Wireless Capability Yes — REL Airship system required (sold separately)
Protection System Fully electronic SET-SAFE™
D.C. Fault / Output Short Yes / Yes
Mains Input Voltage 220–240 V, 110–120 V for some markets
Fuses 7A semi delay (220 V), 15A semi delay (120 V)
Dimensions (W × H × D) 362 × 838 × 514.5 mm (14¼ × 33 × 20¼ in), +44.5 mm depth with High Level connector
Net Weight 58 kg (128 lbs)
Shipping Weight 69 kg (153 lbs)
Finish Gloss Piano Black
Supplied Accessories Power cable, Neutrik Speakon cable (10 m), user manual

📦 What’s in the Box
📦 REL 212/SX Subwoofer
🔌 Power cable
🔗 Neutrik Speakon cable (10 meters nominal)
📖 User manual

🔄 Compatibility
✔ Works with stereo receivers, DACs, preamps, powered speakers via RCA, XLR, or Neutrik Speakon
✔ Supports high-level, low-level, and LFE inputs
✔ Compatible with REL Airship wireless transmitter
✔ Suitable for 2-channel and home theater systems

📦✈️ Shipping & Returns
📦 Insured worldwide delivery
🔄 14-day return policy
🛡️ 2-year EU warranty

📝 Reviews
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