Nexo GEO S1230 Scalable Loudspeaker Module

The compact 2-way GEO S1230 scalable loudspeaker module displays exceptional MF-LF output (103dB SPL nominal sensitivity -1W @1m).

All from a single 12"loudspeaker with NEXO's proprietary Directivity Phase Device(DPD).

Nexo GEO S1230 Scalable Loudspeaker Module

A narrow-Q (30°) device in single-source mode, S1230’s unique Hyperboloid Reflective Wavesource (HRW) allows coupled S1210/1230s to radiate as coherent, wavefronts, yeilding precise pattern control in vertical or horizontal arrays. S12 arrays display traditional "tight-pack" pattern control in the non-coupled plane.

Coupled MF/HF pattern control is array-dependent, as designed by GEOSoft2 array software. Non-coupled MF/HF coverage is adjustable, via NEXO’s patented Configurable Directivity Device (CDD) flanges, at either 80° or 120°. Comprehensive hardware accessories, for both fixed and mobile systems, optimize intercabinet angles and rigging. NEXO’s digital N242 TDcontroller maximizes S1230’s MF/HF coherency while providing EtherSound network control. The optional S12 TDcontroller offers cost effective analogue system processing.


  • Components: HF: 1x 3" voice coil, 1.4" throat 16Ω driver on a 30° hyperboloid reflective wavesource.
    MF/LF (front-firing): 1x 12" high excursion neodymium 16Ω driver
  • Height x Width x Depth: 344 x 674 x 400 mm excluding accessories. Rigging axis to axis height: 345mm
  • Shape: 30° Trapezoid
  • Weight net: 26.8kg excluding accessories
  • Connectors: 2x NL4MP SPEAKON 4-pole (In & Through)
  • Construction: Baltic Birch ply with structured black coating
  • Front finish: Molded Dark Grey Metal Grille
  • Flying points: Two plates connecting with external accessories. Intercabinet angle adjustments = (16°) - 22.5° - 30°


Nexo GEO S1230 Scalable Loudspeaker Module

Frequency Response[a]: 53Hz - 19kHz ± 3dB
Usable Range @-6dB[a]: 50Hz - 20kHz
Sensitivity 1W @ 1m[b]: 103dB SPL Nominal
Peak SPL @ 1m[b]: 131 to 133dB Peak (for 500 to 900 W RMS Amplifier)
Dispersion[c]: Coupling Plane: 28.5°
Non-Coupling Plane: Configurable 80° / 120°
Crossover FrequenciesLF- HF: 1.1kHz Passive or Active (internally configurable)
Nominal Impedance 16Ω
Recommended Amplifiers:
3x GEO S1210 in parallel HF: 875 to 1550W into 4Ω
LF: 1750 to 3100W into 4Ω
4x GEO S1210 in parallel HF:1000 to 1800W into 4Ω
LF: 2000 to 3600W into 4Ω
6x GEO S1210 in parallel HF: 1650 to 3000W into 2Ω
LF: 3300 to 6000W into 2Ω
System Operation
Electronic Controller: NEXO TDcontroller presets are precisely matched to GEO S12 Series cabinets and include sophisticated protection. Using GEO S12 Series cabinets with improperly connected TDcontrollers will result in poor sound quality and can damage components.
Array Design: Arrays of less than 4x GEO S1210 will provide poor dispersion control and neither recommended nor supported.
Sub-Bass: RS15 / CD18 / GEO SUB / S2 extend system low frequency response down to 35Hz / 32Hz / 38Hz / 32Hz.
Speaker Cables Active: 1-/1+:LF; 2-/2+: HF / Passive: 1-/1+: Not Connected; 2-/2+:LF + HF.
Rigging System: Please refer to the GEO S1230 User Manual before operation.
Shipping & Oordering
Packaging: GEO S1230 are packaged individually
Shipping Weight: 1x GEO S1230 = 30kg, 0.15 cu m

Nexo GEO S1230 Scalable Loudspeaker Module Dimension Diagram

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