Incredible fidelity, Impressive output for its size
90 x 10, 130 x 10 (WIDE) dispersion pattern
2-way Biamplified enclosure
Curved laminar vents for maximum LF extension and no port noise
LF extension further with M118i or M218i


The LA28i is a 2-way high performance linear array loudspeaker system employing 2 8” LF and a 1.4” exit HF connected to an acoustic boundary element optimized waveguide. The precise 90 X 10 (h x v) constant directivity horn delivers accurate, consistent coverage area when deployed for mains PA applications. The LA28i horn feautures the proprietary RMS-Acoustics confocal elliptic waveguides, made with cutting edge additive manufacturing technology. The LA28i enclosure is constructed from birch hardwood plywood featuring, an impact and UV resistant polyurethane paint finish, and high resolution integrated interconnect rigging. The front of the loudspeaker cabinet is protected by a hexagonal punched and laser cut steel grill, backed with an acoustically transparent foam.


Frequency Range (-10dB): 55Hz- 20kHz                           with  LA28FR PRESET
Frequency Response (±3dB): 70Hz -18kHz,                          with  LA28FR PRESET
Electrical Input Connectivity: Dual Neutrik NL4MP connectors on rear
Transducer Power Rating (AES) LF    700W (2800W Peak), 2 hrs, 500W 100Hr
HF    110W (400W Peak), 2 hrs 70W 100Hr
Long Term Power Rating (IEC) LF    600W, 1200W, 2400W ( Continuous, Program, Peak)
HF    220W, 400W, 800W (Continuous, Program, Peak)
Maximum SPL (1m) 127dB Continuous, 133dB Peak
Sensitivity (dB SPL, 1W, 1m) 103dB
Nominal Impedance: LF 8 Ohm
HF 8 Ohm
Low Frequency Driver 8in Neodymium cone loudspeaker with 2.5″ voice coil, shorting ring and high performance convective cooling technology
High Frequency Driver 1.4″ exit Neodymium compression driver with 3in voice coil, shorting ring, and advanced phase plug geometry
Enclosure Construction 15 and 18mm Birch Hardwood plywood 1.3mm layers
Suspension Attachment Proprietary internal, captive rigging
Flown Array Maximum 22 LA28, or LA28 wide. Number decreases by formula with M118 inclusion at top of array.
Finish Black Polyurea/ Urethane with aliphatic UV inhibitor
Grill Details Powder Coated 12 Gauge Cold Rolled Steel, Hexagonal Pattern
Dimensions W X D X H: 28.5″ X 15.5″ X 9.7″, 723.9mm X 393.7mm X 246.4mm
Net Weight 62 Lbs, 28.2kg
Ordering Options LA28, LA28i (Install), LA28WIDE, LA28iWIDE (Install)
Color Ordering Options Black Standard, Optional (Upcharge) -W (White), -X (Weatherized), -C (RAL Specified custom color)


LA28RF1 Required Large format Rigging Frame
LA28RF2 Optional small format compact Rigging Frame, can suspend a maximum of 8 LA28 or LA28WIDE — NOT DESIGNED FOR USE WITH M118
LA28RF-EX LA28RF1 Extension arm, facilitates high uptilt, downtilt, wide spaced rigging points
LA28-UMOUNT Ceiling Umount for LA28, hand up to 5 LA28 or LA28WIDE
LA28-CART1 Rolling Cart, supports up to 6 LA28, including Frame and cable Storage
LA28-TOPPLATE Top Cover and 4 Corner Poles, creates flat top with load support up to 200Lbs
LA28COVER4 Weather resistant cover for 4 LA28 on Cart
LA28COVER6 Weather resistant cover for 6 LA28 on Cart
NL4JUMP Cable Jumper
NL4-18M 18m Cable (59ft)
NL4-25M 25m Cable (82ft)
NL4-30M 30m Cable (98.4ft)


LA28i Datasheet