Nettuno L28

Montarbo Nettuno L28 is a compact and highly adaptable active line array engineered to integrate seamlessly into a wide range of professional configurations. Delivering robust output, exceptional flexibility, and uniform coverage, it represents an optimal solution for touring and permanent applications. Purpose-built for demanding applications, the Nettuno L28 ensures consistent reliability and a sonic character that stands out in any environment.

OVERVIEW

Montarbo L28: adaptive nature in a lightweight enclosure.

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 Nettuno 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.

FEATURES

1000W RMS class D amp

135,5 dB SPL

2×8” LF transducers

1.4” HF driver with 3” V.C.

100° horizontal dispersion

Plywood enclosure with polyurea finish

23,4 Kg

TECHNICAL SHEET

Acoustical Data

Speaker Type
Two-way Active Line Array Element

Frequency Response [-6 dB]
75Hz  15.6 KHz 

Max SPL
135.5dB

Dispersion
H 100°

HF
1.4″ – 3″ V.C.

LF
2x 8″ – 2″ V.C.

Crossover Frequency
940 Hz

Amplifier

RMS Power
1000 W

Cooling
Passive convection

Processing

DSP
FIR – Linear phase filters
8x presets for speaker coupling
8x presets for HF compensation

AD/DA Converter
24Bit / 48kHz

Limiter
Dual stage signal limiter
Thermal

Controls
Sensitivity Knob
Speaker Coupling Rotary
HF Compensation Rotary
Limiter/Signal/Status/ON Leds

Input/Output Section

Signal
1x XLR IN
1x XLR OUT

Power
PowerCON True™ IN/OUT

Service
USB-C Type port

Enclosure

Suspension points
Integrated rigging system with locking pins

Handles
2x Built-in on back
1x each side

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 Material
Plywood with polyurea finish

Crowd having fun at concert

APPLICATION

The modular design and wide range of accessories make the Montarbo L28 ideal for small PA setups as well as medium-size concerts reaching audiences of up to 5,000 people. Its flexible configuration options allow the system to adapt to a variety of environments, from outdoor festivals and public gatherings to theatres, concert halls, and houses of worship. Whether deployed in ground-stacked arrangements or flown as part of a larger system, the L28 maintains consistent performance and coverage, making it a dependable choice for rental companies, touring productions, and permanent installations alike.

ACCESSORIES

DRK-28

DSA-L28

DT-28