User's Manual

Page 38/62 SYSTEM ALIGNMENT GUIDELINES
9 SYSTEM ALIGNMENT GUIDELINES
The NXAMP’s factory delay presets are optimised to provide the best possible crossover between the
GEO M6 and LS or RS Subwoofers systems. The reference point for this adjustment is the front of each
cabinet. (This means that the internal delays needed to achieve a correct time alignment are set for
cabinets standing next to each other with both fronts aligned). We recommend that the system is
adjusted so that arrivals from GEO M6 and LS or RS subwoofers are coincident at a fairly distant
listening position.
9.1 GEO M6 Vertical Cluster design
Cluster design must be done with NS-1, which provides very intuitive and fast method to determine all
cluster geometry parameters in relation to venue where cluster is implemented.
NS-1 is a freeware available for all Nexo users. Please contact your local distributor for
licensing procedure.
IMPORTANT
Never install a GEO M6 cluster without checking its acoustical performances and
mechanical safety in NS-1 prior to installation.
Please contact your local distributor for assistance and/or training NS-1
9.2 Stacked LS18s and Flown GEO M6
In the example below, r
1
being the distance from GEO M6 array to listener position, and r
2
being the
distance from LS18 to listener position, the distance difference is then r
1
–r
2
(specified meters or feet).
r
1
> r
2
, the delay should be set on the LS18 NXAMP TDcontroller channel.
r
1
< r
2
, the delay should be set on the GEO M6 NXAMP TDcontroller channel
To convert the result in time delay (specified in seconds), apply:
t = (r
1
-r
2
)/C r
1
and r
2
in meters, C (sound speed)  343 m/S.
Set the units to meters, feet or seconds according to your preference). Delay will have to be adjusted
according to the distance difference r
1
–r
2
(see figure below).