EAW NTS250, Руководство пользователя

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7 ARRAY OPERATION
7 . 1 O v e r v i e w
The operation of a NTS250 Series system involves:
1. Understanding the principles on which it operates.
2. How to electronically configure it for a specific task.
7 . 2 E n g i n e e r i n g D e s i g n
The NTS250 packs a big sound and an ever
bigger set of user definable features into
a compact and powerful active subwoofer.
The new advanced feature set on the input
controls sport a simple push button con-
figuration offering cancellation at 180
degrees in a cardioid pattern or cancellation
at 135 degrees in a hyper-cardioid pattern
between two NTS250 subwoofers.
From this revolutionary fast set up optimized for the NTS250 the flexibility to perform pattern control
from an array continues. Users can interface with the onboard processing of the NTS250 through EAW
Pilot software and tailor the output pattern of multiple NTS250 subwoofers to match defined
cancellation angles and a center frequency of cancellation. With the customary compliment of
equalization filters, gain adjustments, delay settings, and polarity controls found standard in EAW NT
series products, the NTS250 subwoofer is packed with features not usually associated with self
powered subs. Innovative design offers a full spectrum of input options including analogue, AES, and
EAW’s U-Net audio network over Cat-5 cable. Configuring arrays of subs is easy via U-Net’s discrete
64 channels of audio and 64 channels of control supporting a full line of EAW products by
inexpensively and efficiently connecting devices linked through U-Net. Not only does the NTS250
provide unique flexibility in cardiod arrays, it can be flown in powerful compact line arrays.
Combining the interconnectivity of U-net, the ability to be flown in arrays, and when used with a
special adaptor bar the NTS250 completes a full NTL720 line array.
This professional, high output yet compact premium subwoofer unites two highly efficient, 4 inch
voice coil, neodymium 15 inch woofers (arranged in a push-pull variant of the SB1000 family
transducer configuration), 2000W of amplification, powerful DSP, U-Net audio network, a native
rigging system, push button 2 box cardioid and hyper-cardioid configurability, and durable RoadCoat
cabinet finish within a single integrated system. This is so much more than just another subwoofer. It
is one of the most sophisticated subs in the world.
7 . 3 O p e r a t i n g C o n t r o l s
The operating controls on the NTS250 rear panel are momentary contact, “soft” switches. This means
that they control software that does the actual switching with
status lights indicating the switch “position.” Pressing a switch
repeatedly will cycle through its available options.
7.3.1 INPUT SELECT
Repeatedly press the switch between the XLR input connectors
to cycle through and select the desired input signal type.
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ALL ON = U-NET INPUT
INPUT SELECT
AES/EBU
CH 2 AES/EBU
CH 1
NORM/
ANALOG
NORM/ANALOG
AES/EBU CH1
AES/EBU CH2
U-NET
OFF
O N
OFF
O N
O N
OFF
OFF
O N
OFF
OFF
O N
O N
LED STATUS
CARDIOD
HYPER-CARDIOD
CARDIOID HYPER-CARDIOID