212/SX builds on the strengths of the legendary 212/SE. Upgraded alloy drivers with carbon fiber blades are stronger, a new flat passive radiator extends even deeper and our PerfectFilter™ delivers crushing low bass with greater speed and air, taking 212/SX well beyond its illustrious predecessor.

  • TYPE: (2) Front-firing active drivers, (1) rear passive, (1) down-firing passive

  • ACTIVE DRIVER SIZE & MATERIAL: (2) 12 in., 300mm long-throw, Continuous CastAlloy™ cone structure, cast chassis

  • PASSIVE RADIATOR SIZE & MATERIAL: (2) 12 in., 300mm Carbon/Carbon flat cone structure, steel chassis

  • LOW FREQUENCY EXTENTION: -6dB at 18 Hz

  • INPUT CONNECTORS: High Level Neutrik Speakon, Low Level stereo RCA, LFE XLR and LFE RCA

  • OUTPUT CONNECTORS: N/A

  • POWER OUTPUT: 1,000 watts (RMS)

  • AMPLIFIER TYPE: NextGen5 Class D

  • WIRELESS CAPABILITY: Yes- REL AirShip system [required]. Sold separately.

  • FULLY ELECTRONIC SET SAFE: Yes

  • D.C. FAULT: Yes

  • OUTPUT SHORT: Yes

  • MAINS INPUT VOLTAGE: 220-240 volts, 1120-120 volts for certain markets

  • FUSES: 7 Amp semi delay 220 volts operation, 15 Amp semi delay 120 volts operation

  • W X H X D: 14 1/4in., x 33in., x 20 1/4 in., (362 x 838 x 514.5mm) 

  • NET WEIGHT: 128 lbs. (58 kg) 

  • FINISH: Piano Black Lacquer


Good synergies with REL Acoustics's 212/SX