NETTUNO S181

Overview

Nettuno S181: scalable, discreet, perfect. The Nettuno S181 is an active 18" subwoofer designed to provide clean, reliable low-frequency reinforcement in compact professional systems. Its single 18" ferrite driver, built around a dual 4" voice coil, is powered by a 1000 W RMS amplifier module, delivering a solid peak output of 133 dB and a usable bandwidth starting at 35 Hz. Designed to offer controlled, articulate low end, the S181 performs effectively both as a standalone subwoofer and as part of multi-unit configurations. An integrated DSP section streamlines deployment, offering presets that adapt the S181 to different system layouts and applications. Whether used in small PA setups, mobile rigs, or fixed installations, it provides consistent behavior and predictable tuning. With its straightforward connectivity and compatibility with Nettuno T and L28 systems, the S181 delivers a scalable, uniform low-frequency foundation for a wide range of productions.

Features

• 1000W RMS class D amp

• 133-135 dB SPL (preliminary)

• 1x 18" LF transducer with 2x 4" V.C.

• Plywood enclosure with polyurea finish

• Cardioid preset and delay selection

Application

The Nettuno S181 is designed for a wide range of low-frequency reinforcement needs, from compact PA setups to more structured professional systems. Its controlled response and ample output make it effective in corporate events, live music, conferences, and fixed installations where clean, reliable low end is required. In larger productions, the S181 integrates smoothly with Nettuno L28, supporting ground-stacked and cardioid arrangements to maintain consistent low-frequency coverage. Its performance and flexibility make it a solid choice for outdoor events, theatres, concert halls, houses of worship, and any venue that benefits from dependable sub-bass support.

Specification sheet

Acoustical Data

Speaker Type

Vented Enclosure - Stereo Subwoofer Frequency Response [-6 dB] 40Hz - 100Hz

Max SPL

134dB (preliminary)

HF

1.35″ driver

LF

18″ - 2 x 4″ V.C.

Dispersion

omni H x omni V

Amplifier

Amp Class

TBA

RMS Power

1000 W

Peak Power

2000 W

Cooling

Conventional

DSP

Advanced Functions

FIR filters ADAU 1701 - 24/48 Bit

AD/DA Converter

24Bit / 48kHz

Controls

MAIN LEVEL | USER/SERVICE SWITCH LINK/X-OVER SWITCH | LIMITER/SIGN./ STATUS/ON LEDS | USB C-TYPE PORT

Connectors

Dimensions

W x H x D 720 x 560 x 700 mm [14,02" x 24,21" x 13,78"]

Weight

51.5 Kg 113.54 Lbs

Cabinet

PLYWOOD 15/18mm - POLYUREA COATING