Nexo PS15 / LS18 x 4 / AMP4X4 Package



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Included In The Package:

2 x Nexo PS15 R2 PA Speakers
4 x Nexo LS18 Subwoofers
1 x Nexo NXAMP4X4 MK1 4 Channel Amplifier / Processor
2 x K&M Distance Poles
2 x 10M 4 Core Speaker Cables
4 x 2M 4 Core Speaker Link Cables

If you would like to demo any of the Nexo systems we have available, please call us on 01604 638100 to arrange a listening session at our showroom in Northampton.

Nexo PS15-R2


High-power system (136dB Peak SPL @ 1m) with 15in LF and 2in HF drivers
Rotatable asymmetrical horn and unique cabinet architecture ensure versatility; user- adaptable for both PA and stage monitoring applications
Two-way, switchable passive or active design for precise performance-matching to user requirements

Sophisticated control electronics ensure reliable, linear operation
Supported with a full range of mounting and flying accessories


  • Frequency Response [a] 50 Hz – 18 kHz ±3 dB
  • Usable Range @-6dB [a] 47 Hz – 18 kHz
  • Sensitivity 1W @ 1m [b] 102dB SPL Nominal, 99dB SPL Wideband
  • Height x Width x Depth 675mm x 434mm x 368 mm
  • Nominal Peak SPL @ 1m [b] 133 to 136 dB Peak
  • HF Dispersion [c] 50° to 100° Hor. x 55° Vert.
  • Rotatable Horn 4 positions
  • Directivity Q & DI [c] Q : 16 Nominal DI : 12dB Nominal ( f > 1.5 kHz )
  • Crossover Frequencies 1.1 kHz Passive or Active (internally switchable)
  • Nominal Impedance Passive : 8Ω or Active : LF: 8Ω & HF: 16Ω
  • Active Mode only available on NXAMP
  • Recommended Amplifiers Passive: 1000 to 2000 W / 8Ω
  • Active: (LF) 1000-2000W/8Ω (HF) 250-500W/16Ω

Nexo LS18


The LS18 subbass cabinet brings new versatility to NEXO GEO S12 line array systems and PS Series cabinets, delivering high SPL at a relatively low cost. Light and easy-to-handle, the LS18 uses a single 18″ long excursion driver and is compatible with all GEO S12 accessories, so it can fly with the S1230 and S1210 line array modules, or anchor a ground stack of S12 cabinets. With a steel stand fitting on top of the cabinet, the LS18 also allows for pole mounting of GEO S12 cabinets or NEXO PS15-R2 full-range speakers. LS18 can be flown in tandem with PS15s, which will be of particular interest to the installation sector.


  • High power system (137-140dB peak SPL @ 1m)
  • Frequency response 30Hz-130Hz
  • 1 x 18″ 4″ voice coil long excursion 8Ω driver
  • Light and easy to handle
  • Integrates with GEO S12 and PS Systems


  • Frequency Response [a] 35 Hz – 120 Hz ±3dB
  • Usable Range @-6dB [a] 32Hz – 130 Hz
  • Sensitivity 1W @ 1m [b] 107 dB SPL Nominal
  • Nominal Peak SPL @ 1m [b] 137 to 140 dB Peak
  • Nominal Impedance 8 Ω
  • Crossover Frequencies 60 Hz – 85 Hz – 120 Hz Active
  • Amplified Controller NXAMP4x1: 2 x LS18 in parallel on 2 bridged channels
  • NXAMP4x4: 2 x LS18 on 1 channel



NXAMP is far more complex than a bundled power amplifier and loudspeaker controller. Significant DSP innovations allows multiple digital sense lines to protect at the same time the amplifier and the connected speakers. First the NXAMP4x4 uses a unique dual mains cord, feeding the power supplies with nearly twice the power than most audio amplifiers today, still being extremely easy to connect to any mono or multiple phases mains. To absorb this enormous quantity of current the NXAMP4x4 reveals four independant high power full resonant power supplies working in opposite phase, thus cancelling noise and lowering EMC.

NXAMP4x4 uses advanced custom components based power amplifier design, the ultimate evolution of the Yamaha’s EEEngine technology, offering the sonic purity of conventional class AB but a heat dissipation equaling the class D. Not only the two dual-core DSPs are taking care of the amplifier protection and optimization, but they also redefine the processing standard of NEXO proprietary loudspeaker management technology to a higher sonic performance and reliability level.

With useful features such as full computerless front panel operation, on the fly independant louspeaker per output selection or load monitoring trough GPIO or Ethersound™/AES/EBU/Dante™ network for safety installation, the NXAMP4x4 is ideal for a wide variety of demanding applications.


  • Ultra flexible true four channels digital processing and amplification solution offering a perfect match to any NEXO speakers
  • Among the industry’s most powerful four channels amplifiers
  • Cost effective integration of command, control, protection and amplification of all NEXO speakers systems
  • Lighter and requires less rack space than conventional amplifier-processor systems
  • Eliminates unnecessary A/D conversion
  • Optional Dante™, EtherSound™ or AES/EBU network card


  • Number of channels 4x amplifiers channels, 2 by 2 bridgeable
  • Max. output voltage (no load) 4x 200 Volts
  • Max. output power (4 channels mode /8 Ohms load per channel) 4x 1900 Watts
  • Max. output power (4 channels mode /4 Ohms load per channel) 4x 3300 Watts
  • Max. output power (4 channels mode /2 Ohms load per channel) 4x 4000 Watts
  • Max. output power (2 channels mode /8 Ohms load per channel) 2x 6800 Watts
  • Max. output power (2 channels mode /4 Ohms load per channel) 2x 8000 Watts
  • Power consumption (Standby) 20 Watts
  • Power consumption (Idle) 120 Watts
  • Frequency response +0.5 dB from 10 Hz to 20 KHz
  • Input impedance / Max. level 20 KΩ / +28 dBU
  • Dynamic range / TDH + N 105 dB unweighted / Typical 0.1% on a flat setup
  • Latency 500 us on a flat setup
  • A to D Converters Audio and current/voltage sense lines : 24 bits @ 48 KHz
  • Processing Two dual-core 24 bits fixed point DSP with 56 bits accumulator