XTA 4 Series, Руководство оператора, Страница: 8 / 58

Page 8 4 Series 4 Series 4 Series 4 Series Operator’s Manual
Introduction
The
4 Series
are powerful DSP based audio processors, ideally suited for install applications, where they combine the
functions of a multitude of conventional products in a compact 1U unit with extensive remote control capabilities. To
achieve this, the units have up to four inputs and eight outputs which can be configured in a selection of basic crossover
modes – 4 x 2 way; 2 x 3 way + 2 Aux; 2 x 4 way; and 1 x 8 way (as applicable to i/o configurations). They also offer a
“free assign” mode, which allows completely flexible routing of any output from any combination of inputs.
Each input has a gain control, variable delay, a 28 band graphic equaliser and a further eight bands of fully parametric
equalisation. The parametric filter bands have a large selection of different filter types available, including shelving, notch,
band-pass, phase and elliptical behaviours.
Each output has a gain control, variable delay, high and low pass crossover filters, nine bands of fully parametric
equalisation, polarity switching and, additionally, a fully featured limiter, and a final clip limiter. The crossover filters offer
slopes of up to 48dB/Octave., with a variety of responses available.
Remote control
1
is catered for in the form of RS232 and RS485 ports, and multiple user memories are provided for the
storage and recall of settings. A GPI interface may also be fitted to allow remote memory recalls using simple switch
closure apparatus.
Security lock-out is available for all controls.
The
4 Series
are also equipped with AES/EBU digital inputs and outputs, and include a sample rate converter, capable of
accepting anything from 32kHz up tp 192kHz.
They may be controlled externally by XTA’s proprietary Windows
TM
software, along with existing and
future ‘AudioCore’ products.
Features
Superb audio quality – carefully optimised double precision signal processing coupled with 24 bit conversion ensure a
dynamic range in excess of 117dB. The high sampling rate of 96kHz means minimal filtering providing exceptional sonic
purity with a bandwidth in excess of 32kHz.
A flexible input/output multi-mode format caters for any configuration, regardless of scale.
Both routing of inputs to outputs, and ganging (for editing) are completely flexible.
A completely new SHARC
TM
based DSP platform supplies phenomenal computational power, allowing the unit to provide
not only multiple bands of standard parametric equalisation on every input and output, but an additional full spectrum
graphic equaliser on each of the four inputs. This additional power also permits both program limiters and no overshoot
clip limiters on each output.
Delay of up to 650mS may be independently set for each output, with an exceptionally fine minimum increment of 300nS,
which corresponds to a distance change of 0.1mm!
The comprehensive standard specification also includes up to 255 memories, and remote control via RS232 or RS485
ports, with security lockout.
XTA’s new proprietary Complex Unified Nyquist Truncation algorithm ensures that no matter how much equalisation is
applied to a channel, there will always be sufficient headroom available to cater for it.
1
Note that only the RS232 and RS485 interfaces offer full remote control of this product – the GPI interface may only be
used for memory recall (program change) purposes.