T
ECHNICAL
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PECIFICATIONS
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9.2 GEO SUB Directional Sub-Bass
9.2.1 System
specifications
PRODUCT FEATURES
GEO SUB
Components
1 x 18” (46cm) long excursion neodymium 8 Ohm drivers
& 2 x 12“ (30cm) neodynium drivers
Height x Width x Depth
515 x 744 x 1131 mm (20 1/2” x 29 1/2” x 44 1/2”)
Shape
10° Trapezoïdal
Weight: 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 TDcontroller
Frequency Response @-3dB [a]
38 Hz – 300 Hz
Usable Range @-6dB [a]
35 Hz – 500 Hz
Sensitivity 1W @ 1m [b]
103 dB SPL Nominal
Peak SPL @ 1m [b]
140-143 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 = 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 Ohms
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 GEO SUB 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 GEO SUB is wired 2+ & 2- while the rear loudspeaker is wired 1- & 1+. The GEO
SUB 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 spe/- 3 dB range. Data are for s pro 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.
