Montarbo L28 is a compact and highly versatile powered line array module, designed to integrate seamlessly into a wide range of professional sound reinforcement systems. Thanks to its output capability, exceptional flexibility, and uniform coverage, it is an ideal solution for both touring and installed applications. Engineered for demanding environments, the L28 delivers consistent reliability and a distinctive sonic signature in any setting.

Nettuno L28 incorporates two 8-inch ferrite woofers and a 1.4-inch neodymium compression driver with a 3-inch voice coil, powered by a Montarbo-engineered 1000 W RMS amplifier featuring integrated DSP and FIR filtering. Its symmetrical waveguide and phase-plug architecture deliver exceptional efficiency, achieving an optimal balance of compact form factor, refined industrial design, and impressive acoustic output.

Deployment is streamlined and intuitive: up to 20 cabinets can be configured using only two rotary encoders, with coupling and HFC presets readily accessible. With a 100° horizontal dispersion, the L28 ensures smooth, uniform coverage across wide or acoustically challenging medium-size environments. External processing is unnecessary—the built-in high-frequency compensation provides precise control over each cabinet’s throw, enabling effortless system optimization.

When paired with the Nettuno S181 or S182 subwoofers, the L28 forms a coherent and scalable system capable of delivering focused energy and consistent performance for audiences of up to 5,000 people.

The Nettuno L28 is sold as a single unit. Multiple units are required to configure and achieve a line array system.

The Nettuno L28 is equipped with two 8” ferrite woofers and a 1.4” neodymium compression driver with a 3” voice coil, powered by a 1000 W RMS amplifier module designed byMontarbo, featuring onboard DSP and FIR filtering. Its symmetrical waveguide and phase plug design ensure high efficiency, achievingan optimalbalance between compact formfactor, refined industrial design, and impressive acoustic performance.

Speaker Type
Two-way, Active Line Array Element

Frequency Response [-6 dB]
75Hz – 15.6 KHz

Max SPL
135.5dB

Dispersion
100°

HF
1.4″ – 3″ V.C.

LF
8″ – 2″ V.C.

Crossover Frequency
940 Hz

Amplifier

Amp Class
D

RMS Power
1000 W

Peak Power
2000 W

Cooling
Conventional

DSP

Advanced Functions
8 presets / Linear phase – FIR filters

DSP
28/48 Bit

AD/DA Converter
24Bit / 48kHz

Controls
CH1 level
User/Service switch
Limiter/Sign./ Status/On leds
USB C-TYPE port

Connectors
Power Connectors
IN/OUT 110-240V AC

Enclosure

Dimensions
W x H x D
600 x 260 x 390 mm
[23,62” x 10,24” x 15,35”]

Weight
23.4 Kg
51.6 Lbs

Cabinet
PLYWOOD 12/15mm – POLYUREA COATING

Montarbo Nettuno L28 2x8" Active Line Array per unit 1000 W RMS Class D amplifier //// Special Order ////