Montarbo Nettuno-S181
Compact, high-performance 18" active subwoofer
MSRP.
£1598.67 + VAT
Trade price.
Key Features.
1000W RMS class D amp
134 dB SPL
1x 18” LF transducer with 2x 4” V.C.
Plywood enclosure with polyurea finish
Description.
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 behaviour 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.









