Nexo GEO D series User Manual

Contents

Nexo GEO D series User Manual Manual pdf 77 page image

TECHNICAL SPECIFICATIONS Page 77/939.2 GEO SUB Directional Sub-Bass9.2.1 System specificationsPRODUCT FEATURES GEO SUBComponents 1 x 18” (46cm) long excursion neodymium 8 Ohm drivers& 2 x 12“ (30cm) neodynium driversHeight x Width x Depth 515 x 744 x 1131 mm (20 1/2” x 29 1/2” x 44 1/2”)Shape 10° TrapezoïdalWeight: Net 86 kg (189.6 lbs)Connectors 2 x NL4MP SPEAKON 4 pole (In & Through)Construction Baltic birch ply finish with structured black coating.Front finish Molded Dark Grey Metal Grill.Flying points Integral flying system.Intercabinet angle adjustments = 0.2°, 0.315°, 0.5°, 0.8°; 1.25°, 2.0°, 3.15°, 5°, 6.3°, 8.0°, 10.0° (logarithmic steps)SYSTEM SPECIFICATIONS GEO SUB with NX242 TDcontrollerFrequency Response @-3dB [a] 38 Hz – 300 HzUsable Range @-6dB [a] 35 Hz – 500 HzSensitivity 1W @ 1m [b] 103 dB SPL NominalPeak SPL @ 1m [b] 140-143 dB PeakDispersion [c] Cardioid pattern over the entire useable bandwidth (two channels of the NX242 are used for the process).Directivity Index [c] Q = 3.4 & DI = 5.3 dB over the entire useable bandwidth.Crossover Frequency X-Over Mode = 75 Hz active / Overlap Mode = 300 Hz through NX242 Digital TDcontroller.Nominal Impedance 2 x 8 OhmsRecommended Amplifiers 2 amplifier channels are required for directional operation, each rated at 1000 to 2000 Watts into 8 Ohm perchannel.SYSTEM OPERATIONElectronic Controller The NX242 Digital TDcontroller presets are precisely matched to the GEO SUB and include sophisticatedprotection systems. Using the CD18 subbass without a properly connected NX242 Digital TDcontroller will result inpoor sound quality and can damage components.Speaker Cables The front loudspeaker of the GEO SUB is wired 2+ & 2- while the rear loudspeaker is wired 1- & 1+. The GEOSUB must use separate cables from the main system.Rigging System [d] Please refer to the user manual before any operation.As part of a policy of continual improvement, NEXO reserves the right to change specifications without notice.[a] Response curves and data: anechoic far field above 400 Hz, half-space anechoic below 400 Hz.Usable range data: frequency response capability with TD crossover slopes removed.[b] Sensitivity & peak SPL: will depend on spectral distribution. Measured with band limited pink noise.Refers to the specified +/- 3 dB 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 off-axisresponse curves.[d] Please refer to the user manual.