STM S118 Sub Module

Sub-bass cabinet featuring a Neodymium high excursion 3000W 18″ driver. A bandpass load ensures SPL output equivalent to conventional dual 18″ sub-basses. Same width, double the height of M46 main cabinet, double height of main cabinet so the S118 can be flown in the array or ground-stacked in line. Can be run in omnidirectional or cardioid sub mode.

S118 features innovative PistonRigTM and REDLockTM rigging, enabling any size of system to be flown safely by one person. REDLockTM handle locks front rigging points from rear of cabinet. All adjustments made from one position at rear of cluster.

Key Features

  • 1x18inchLFDriver
  • 143dB peak SPL
  • Frequency response: 25Hz-85Hz
  • H700mm/W575mm/D715mm
  • 85Kg/187lb
  • Omni or cardioid modes


Frequency Response [a]27Hz – 85Hz ±3dB
Usable Range @-6dB [a]23Hz – 100Hz
Sensitivity 1W @ 1m [b]109dB SPL Nominal
Nominal Peak SPL @ 1m [b]143dB Peak
Nominal Impedance16Ω (12 Ω min)
Amplified ControllerNXAMP4x4 - 3xSTM S118 in parallel on 2 NXAMP4x4 bridged channels - 8000W/4Ω


ComponentsLF: 1 x 18” (46cm) 3000W high excursion Neodymium 16 Ohms driver
Height x Width x Depth700 x 575 x 715 mm – 27.56” x 22.64” x 28.15”
Weight : Net85kg – 187lbs
Connectors2 x NLT4-MDV Speakon 4 poles (in/out)
ConstructionBaltic birch ply finished with structured black coating
Handles6 handles (3 per side)
FrontPerforated dark grey metal grille
RiggingIntegral 3 points flying and locking system


STM Brochure