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.

Speaker Type
Vented enclosure – fullrange loudspeaker

Frequency Response [-6 dB]
40Hz – 100Hz

Max SPL
134dB

LF
18″ – 2 x 4″ V.C.

Amplifier

Amp Class
D

RMS Power
1000 W

Peak Power
2000 W

Cooling
Conventional

DSP

Advanced functions
FIR filters

DSP
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
DELAY SELECTION
CARDIOID CONFIGURATIONS

Connectors
POWERCON TRUE1 IN/OUT 110-240V AC

Enclosure

Dimension
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
COMPENSATO 15/18 mm – RIVESTIMENTO IN POLIUREA

Montarbo Nettuno S181 1x18″ Active Subwoofer 1000 W RMS Class D amplifier //// Special Order //// Please call for up-to-date information on product availability (Copy)