Next LA122/LA122W User’s Manual
www.next-proaudio.com
- 6 -
V052013
CABLE SELECTING
Selecting a cable consists of calculating the correct cable section (size) in relation
to the load impedance and the required cable length. A small cable section will increase its
serial resistance, which will induce power-loss and response variations (damping factor).
The following table indicates, for 3 common sizes, a cable length with a
maximum serial resistance equal to 4% of the load impedance (damping factor = 25):
Cable section
Maximum Length related to load impedance
8 Ω
4Ω
1.5 mm²
12 m [40 ft]
6 m [20 ft]
2.5 mm²
20 m [64 ft]
10 m [32 ft]
4 mm²
32 m [104 ft]
16 m [52 ft]
RIGGING SYSTEM
The LA122/122W has a simple and intuitive four-point rigging system. It has 2
articulated joints on the front and 2 rear adjustable joints. The rear joints let you define the
angle between two elements.
The LA122 is the main model. It will be the core of any LA122/LA122W system.
It has a controlled 8º vertical dispersion and its’ angle is adjustable from 0º to 8º relative to
the upper element. LA122W is a wider dispersion (15º) element, normally used as the last
element on the array, pointing to the nearest public. It has only 2 adjustment positions, 0º
and 15º.
In order to suspend a LA122/122W, you’ll need to use the NEXT NC18123 frame.
This suspension frame is built specifically to suspend the LA122/122W and/or LAs118
2
1
- Power ratings are indicated according to the specific load conditions described. For more accurate
information on NEXT amplifiers, visit www.next-proaudio.com.
2
For information about NEXT LAs118 please look into LAs118 manual or visit www.next-proaudio.com
2
LA122/122W Line-Array elements
Input
Recommended Amplifier (1 channel)
1
HF
NEXT MA2300 - 600W at 8Ω
LF
NEXT MA3200 - 1200W at 4Ω
