Nexo GEO D - Manual (Page 70)

Page 70/97 NEXO NX242 D IGITAL C ONTROLLER FOR GEO D AND GEO SUB
6.3.3 GEO SUB (Stereo Setups)
Hardware configuration
• Input (L, R or L+R) can be selected in MENU 3.2
• Output 1 drives left GEO SUB side-firing 12 inch transducers;
• Output 2 drives left GEO SUB 18 inch transducer;
• Output 3 drives right GEO SUB side-firing 12 inch transducers;
• Output 4 drives right GEO SUB front 18 inch transducer.
6.3.4 GEO SUB & GEO D Passive (Mono Setups)
Hardware configuration
• Input (L, R or L+R) can be selected in MENU 3.2
• Output 1 drives GEO SUB side-firing 12 inch transducers;
• Output 2 drives GEO SUB front 18 inch transducer;
• Output 3 drives GEO D side-firing LF 8 inch neodymium transducers;
• Output 4 drives GEO D front-firing LF/MF 12 inch neodymium transducers and the HF 3-inch
voice coil, 1.4 inch exit compression driver.
6.3.5 GEO SUB & GEO D Setups
Typical setup families are:
• GEOD WIDEBAND: GEOD starts at 55 Hz. This setup family is recommended for applications
which are not VLF demanding;
• GEO SUB & GEO D X-OVER: GEO SUB is low-passed at 75 Hz and GEO D is high-passed at
75 Hz. This setup family is recommended when GEO SUB’s are stacked and GEO D flown, and
distance between them exceeds 2 meters (6 feet).
• GEO SUB & GEO D OVERLAP: GEO SUB is low-passed at 300 Hz and GEOD is high-passed
at 75 Hz. Therefore, they “overlap” from 75 Hz to 300 Hz. This setup family requires proper
phase alignment between systems up to 300 Hz, and is therefore is recommended when GEO
SUB’s and GEO D are flown together, or when distance between them is lower than 2 meters (6
feet).
Please be aware that setups are periodically revised, refer to the latest versions of the NX242 user
manual and firmware (www.nexo-sa.com).
6.4 Trouble shooting
The NX242 has been designed to be user-friendly. However with highly technical systems such as GEO
D & GEO SUB, incorrect adjustment of the NX242 can lower the quality & safety of your system. Listed
below are the most common errors encountered by NEXO Technical Support.
6.4.1 Operation of Multiple TDcontrollers
Typically, GEO D / GEO SUB systems require multiple NX242’s per side. Eventually, two or more
NX242’s will operate within the same cluster. It is mandatory to verify the consistency of the setups and
adjustment between processors to avoid the problems described below.
IMPORTANT
When using multiple NX242’s in a single array, all parameters should be identical and set
to proper values.