Nexo GEO S8 - Manual (Page 32)

P.32 TECHNICAL SPECIFICATIONS
GEO CD12
SYSTEM SPECIFICATIONS CD12 with NX242 TDcontroller
Frequency Response [a] 42 Hz – 200 Hz ± 3 dB
Usable Range @-6dB [a] 39 Hz – 250 Hz
Sensitivity 1W @ 1m [b] 102 dB SPL Nominal
Peak SPL @ 1m [b] 131 to 134 dB Peak (500 to 1200W RMS Amp)
Dispersion [c] Hypercardiod pattern 120° x 120° over the entire useable bandwidth. Directivity Control is achieved through
DSP algorithms in the NX242 Digital TDcontroller (two channels of the NX242 are used for the process).
Directivity Index [c] Q = 3.773 DI = 5.7 dB over the entire useable bandwidth.
Crossover Frequency 150 Hz Active through NX242 Digital TDcontroller
Nominal Impedance 2x 6 Ohms
Recommended Amplifiers 2 amplifier channels are required for Hypercardiod operation, each rated at 1500 to 3000 Watts into 4 ohms
per channel. Up to 2 complete CD12s per channel may be connected to a two channel amplifier.
FEATURES GEO CD12
Components 2 x 12” (30cm) Long Excursion Neodymium 6 Ohm Driver
Height x Width x Depth 400 x 600 x 754 mm (15 3/4” x 23 5/8” x 29 11/16”)
Shape Rectangular
Weight: Net 35 kg (77 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 OPERATION
Electronic Controller The NX242 Digital TDcontroller presets are precisely matched to the GEO S8-Series cabinets and include
sophisticated protection systems. Using GEO S8-Series cabinets without a properly connected NX242 Digital
TDcontroller will result in poor sound quality and can damage components.
Sub-bass The GEO S805 & S830 can be used without the optional CD12 Hypercardiod Sub. In this case the NX242
can be used in stereo. With the CD12 Hypercardiod Sub each Sub channel requires two NX242 outputs and
the NX242 will operate in mono.
Speaker Cables The front loudspeaker of the CD12 is wired 2+ & 2- while the rear loudspeaker is wired 1- & 1+. The CD12
must use separate cables to the GEO S805/S830.
Rigging System See corresponding chapter of this manual.
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 200 Hz, Half-space Anechoic below 200 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.
400 mm4
0
0
m
m
754 mm7
5
4
m
m
600 mm 600 mm
Weight : 35 kg/77 lbs