STM M46 Main Module

Injection-moulded high-power cabinet with innovative components for enhanced performance. Flat-membrane drivers ensure completely even and full-range coverage over entire 90° horizontal dispersion. HF frequency range remains completely linear, using Ketone Polymer diaphragms that enhance tonal response and long throw.

M46 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

  • 4 x 6.5 inch LF/MF Drivers
  • 4 x HF Compression Drivers
  • 145dB peak SPL
  • Frequency response: 85Hz-20kHz
  • H350mm/W575mm/D715mm
  • 58Kg/128lb
  • Dispersion 90 ̊ H x 0-10 ̊V


Frequency Response [a]85Hz – 19kHz ±3dB
Usable Range @-6dB [a]80Hz – 20kHz
Sensitivity 1W @ 1m [b]110dB SPL Nominal
Nominal Peak SPL @ 1m [b]145dB Peak
Dispersion [c]90° Horizontal x 0-10° vertical
Crossover Frequency850 Hz
Nominal ImpedanceLF-MF:16Ω (12 Ω min) – HF: 16Ω (12 Ω min
Amplified ControllerNXAMP4x4 - 3xSTM M46 in parallel on 2 NXAMP4x4 channels - 2x4000W/2Ω


ComponentsLF-MF: 4 x 6.5” (17cm) 16 Ω flat membrane high excursion drivers
HF: 4 x 2.5” voice coil, 1.4” throat Neodymium 16 Ω drivers, Ketone Polymer diaphragm
Height x Width x Depth350 x 575 x 715 mm – 13.78” x 22.64” x 28.15”
Weight : Net59kg – 130lbs
Connectors2 x NL8-MDV Speakon 8 poles (in/out) & 1 x NLT4-MDV Speakon 4
poles (to STM S118 and B112)
ConstructionPU Composite Low Density – Polyurethane water based black coating
Handles3 handles (2 sides and 1 rear
FrontPerforated dark grey metal grille
RiggingIntegral 3 points flying system. Inter cabinet angle adjustments from 0.2° to 10° in logarithmic steps


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