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XO1 Operators Manual
Introduction
The XO1 is a powerful DSP based audio processor, ideally suited for live sound
applications, where it combines the functions of a multitude of conventional products
in a compact 1U unit. To achieve this, the XO1 has two inputs and six outputs which
can be configured in five basic crossover modes – 3 x 2 way; 2 x 3 way; 4 way; 5 way;
and 6 way.
Each input has a gain control, and variable base delay. Each output has a gain control,
variable delay, high and low pass filters, five bands of fully parametric equalisation,
polarity switching and, additionally, a fully featured limiter.
Multi-part security lock-out is available for all controls.
The XO1 is also available with optional AES/EBU digital inputs and outputs.
It has been designed for quick, intuitive adjustment through the use of multiple
controls to provide an easy-to-use interface.
Features
Superb audio quality – carefully optimised double precision signal processing coupled
with a 40-bit internal data path ensures a dynamic range in excess of 110dB. The high
sampling rate means minimal filtering providing exceptional sonic purity.
A flexible 2-input/6-output multi-mode format caters for any crossover configuration,
regardless of scale.
A total of 30 parametric equalisation bands are available, each pro15 to –
30dB of gain at centre frequencies between 20Hz and 20kHz, with a wide range of
‘Q’s available between 0.4 to 128. All parameters feature fine resolution with 1/36
octave frequency steps, 0.1dB gain increments, and 100 ‘Q’ settings. Any parametric
section can also be set to operate as a high or low shelving filter.
Each output features a high performance limiter, provided with complete control
over attack, release and threshold parameters. To aid set-up, the output meters
show headroom to the limiter threshold, and use time constants that track those of
the limiter to display precise power usage.
