Nexo GEO T2815 Tangent Array Module

Like its long-throw partner, the T4805, the innovative T2815 Tangent Array Module incorporates the patent-pending GEO Hyperboloid Reflective Wavesource™

Nexo GEO T2815 Tangent Array Module

This unique device for controlling acoustic energy makes GEO T the only concert-level sound system in existence that is capable of seamless, coherent nearfield/downfill coverage.

The T2815 controls mid-bass energy with a unique cardioid dipole that pairs the front-firing woofers with resistive acoustic radiators. When used as the nearfield element in a curved vertical.

Tangent Array with T4805 modules, the T2815’s passive radiators enable it to generate a consistent 120° dispersion in the non-coupling plane from 77–250Hz. When the T2815 is used on its own as a horizontal Tangent Array module, the acoustic resistors can be closed off to allow 6dB more forward gain (at the expense of some loss of directional control in the lower octaves).


Nexo GEO T2815 Tangent Array Module

  • Optimised for high power vertical tangent arrays. T2815 is nearfield/downfill element
  • 0.01° precision logarithmic array assembly system is engineered to maintain adequate safety factors when supporting curved vertical arrays
  • T2815 uses acoustic resistors. Dipolar LF sections produce a cardioid pattern from 70Hz to 250Hz
  • High power, long excursion neodymium 8" woofers deliver full range output
  • Patent-pending Hyperboloid Reflective Wavesources project tangent wavefronts for coherent output and flexible coverage
  • Patent-pending Directivity Phase Device allows line source coupling throughout the midrange
  • GEOSoft2 is a proprietary software application that simplifies optimisation and deployment of NEXO GEO vertical arrays.

Specifications with NX242 TDController

Nexo GEO T2815 Tangent Array Diagram

Frequency Response[a]: 85Hz - 19kHz ± 3dB
Usable Range @-6dB[a]: 77Hz - 20kHz
Sensitivity 1W @ 1m[b]: 107dB SPL Nominal
105dB SPL Wideband
Peak SPL @ 1m[b]: Configuration dependent[d]
Dispersion[c]: Vertical plane.
Configuration dependent[d].
120° Low Frequency: Cardioid
Crossover Frequencies: MF/ LF – HF (front): 1.3kHz active.
Nominal Impedance HF: 16Ω; MF/LF front: 32Ω
Recommended Amplifiers: HF: 3000-w into ~3Ω (6 cabinets parallel per amp
channel). MF/LF front section: 6000-w into ~6Ω (6 cabinets parallel per bridged mono amp)
Connectors 1x AMPHENOL 6-pole
EP6 socket in; 1x MPHENOL AP6 6-pole connector through
Net Weight: 29kg net, inc. array
assembly system
Construction: Baltic birch ply finish with structured black coating for the main structure. Metal box for the rear section, with dark grey coating.
Shape: 15° Trapezoid
Front Finish: Injected polyurethane flange, with metallic grey coating.
  • [a] Response curves and data: anechoic far field above 300Hz, half-space below 300Hz.
  • [b] Sensitivity & peak SPL: will depend on spectral distribution. Measured with band limited pink noise. Refers to the specified ±3dB range. Data are for speaker + processor + recommended amplifier combinations.
  • [c] Directivity curves and data: 1/3 octave smoothed frequency response, normalized to on-axis response. Data obtained by computer processing of offaxis response curves.
  • [d]Please refer to the GEO T User Manual. Usable range data: frequency response capability with TD crossover slopes removed.

Nexo GEO T2815 Tangent Array Module Dimension Diagram

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