Nexo GEO T - Manual (Page 54)

Page 54/67 T ECHNICAL S PECIFICATIONS
7.3 CD18 Directional Sub-Bass
7.3.1 System specifications
PRODUCT FEATURES CD18
Components 2 x 18” (46cm) long excursion neodymium 8 Ohm drivers
Height x Width x Depth 750 x 1200 x 750 mm (29 1/2” x 47 1/4” x 29 1/2”)
Shape Rectangular
Weight: Net 116 kg (256 lbs)
Connectors 2 x NL4MP SPEAKON 4 pole (In & Through)
Construction Baltic birch ply finish with structured black coating. Dark grey carpet finish also available.
Flying points Integral flying system.
SYSTEM SPECIFICATIONS CD18 with NX242 TDcontroller
Frequency Response @-3dB [a] 32 Hz – 80 Hz
Usable Range @-6dB [a] 29 Hz – 180 Hz
Sensitivity 1W @ 1m [b] 105 dB SPL Nominal
Peak SPL @ 1m [b] 142-145 dB Peak
Dispersion [c] Cardioid pattern over the entire useable bandwidth (two channels of the NX242 are used for the process).
Directivity Index [c] Q = 4.3 & DI = 5.3 dB over the entire useable bandwidth.
Crossover Frequency 80 Hz active through NX242 Digital TDcontroller.
Nominal Impedance 2 x 8 Ohm
Recommended Amplifiers 2 amplifier channels are required for directional operation, each rated at 1000 to 2000 Watts into 8 Ohm per
channel.
SYSTEM OPERATION
Electronic Controller The NX242 Digital TDcontroller presets are precisely matched to the CD18 and include sophisticated protection
systems. Using the CD18 subbass without a properly connected NX242 Digital TDcontroller will result in poor
sound quality and can damage components.
Speaker Cables The front loudspeaker of the CD18 is wired 2+ & 2- while the rear loudspeaker is wired 1- & 1+. The CD18 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-axis
response curves.
[d] Please refer to the user manual.