Extreme maximum output, 3200W AES Power handling
LFast transient response for incredible dynamics
Laminar venting for zero port turbulence at the highest drive levels
System integration with RMS-Acoustics Network managed amplification
Designed with Cardioid Sub Arrays (CSA) in mind


The M218i is a high efficiency, high performance sub-bass loudspeaker with exceptionally high power handling. The M218i features two long excursion, high power handling 18” cone drivers mounted in a mechanically and acoustically optimized bass reflex cabinet with laminar venting. Port turbulence is virtually eliminated and distortion is minimized at high drive levels via a large, flared, symmetrical laminar vent.
The M218i enclosure was designed with both portable use and installation in mind. It features the option of up to 24 integrated fly points and optional array frames that allow for mounting to ceilings and the creation of traditional and cardioid flown arrays. The compact profile allows the M218i to fit easily under stages or up tight to ceilings.

The enclosure is constructed of premium birch hardwood plywood and is coated with a weather and wear resistant urethane hybrid finish. Components in the front of the enclosure are protected by a steel grill made from perforated steel that is coated with heat cured epoxy powder and lined with acoustically transparent foam. All optional rigging components are weather and corrosion protected with a heat cured epoxy powder coated finish.


Frequency Range (-10dB): 27Hz – 150Hz, Assumed 100Hz low pass filter 0dB point taken at 60Hz, Unprocessed
Frequency Response (±3dB): 33Hz – 120Hz, Assumed 100Hz low pass filter 0dB taken at 60Hz, Unprocessed
Electrical Input Connectivity: Dual NL4, transducers wired individually, connectors paralleled
Transducer Power Rating (AES) 1600W AES each Transducer, 3200W Peak 2Hr

3200W AES Parallel, 6400W Peak 2Hr

Maximum SPL 137dB cont. avg, 143dB Peak
Sensitivity (dB SPL, 1W, 1m) 104dB 60Hz     100dB 30Hz
Nominal Impedance: 2 8 ohm loudspeakers wired individual, 4 ohm parallel
Low Frequency Driver 2 X 18” weather resistant, long excursion, 4” coil, die cast basket, vented magnet, Aluminum heat sink and demodulating rings
Enclosure Construction Rectangular Cabinet, 15, 16, 18mm Exterior Grade birch plywood
Suspension Attachment M218i 20 (4 Top, 4 Bottom, 4 Back, 4 per side) 3/8-16 threaded brackets
Finish Black Textured Polyurethane with UV inhibitor

Optional Custom RAL Color (Upcharge)

Grill Details Powder Coated 12 Gauge Cold Rolled Steel, Hexagonal Pattern
Dimensions  W X H X D: 47.1  X  21.6  X  29.95 in       1196  X  549  X  761 mm
Net Weight 225 lbs, 102Kg
Ordering Options M218R1, M218R2, M218i, M218F


M218RS2 Flown vertical installation rigging kit, 2 Box
M218RS3 Flown vertical installation rigging kit, 3 Box
M218RS4 Flown vertical installation rigging kit, 4 Box
M218RS5 Flown vertical installation rigging kit, 5 Box
EYEBOLT4 Kit of (4) 3/8-16 Eye Bolt Kit for M218i