Phonic i7200 XrossTech, User Manual

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I7200 USER
’
S MANUAL PHONIC CORPORATION Page 9
Using the i7200 XrossTech
Selecting Stereo or Mono Mode
As you have probably worked out by now, the i7200
XrossTech is a 2-way stereo, 3-way mono digital cross-
over. This means, in stereo mode, you are allowed a total
of 2 output channels - each with a different user-de
fi n-
able crossover frequency - and in mono mode, you can
choose 2 crossover frequencies for the single channel
available. Mono mode, however, does feature a sepa-
rate Subwoofer connection, allowing a total of 4 speaker
outputs in both Stereo and Mono modes.
Link Stereo
When using stereo mode, you can alternate between
channels 1 and 2 by pushing the CH/SEL Key, allow-
ing you to adjust those particular channels properties
separately (as described later in the manual). It is
also possible to adjust both channels simultaneous
by holding the CH/SEL button, then turn the XOVER/
EDIT jog wheel to scroll down to the LINK/ST indica-
tor. This causes any adjustments made to Channel
1 to be applied to Channel 2 also.
3-Way Mono
To select the 3-way mono function, fi rst press and
hold the CH/SEL Key, then rotate the XOVER/EDIT
jog wheel to scroll down to the M/3-WAY Indicator
and press the jog wheel. You are now in mono mode.
To return to stereo mode, just follow the same rou-
tine, and scroll up to the CH 1, CH 2 or LINK/ST
indicators.
Automatic Muting
When entering into either the link stereo or 3-way
mono modes, a mute of all output channels is acti-
vated and must be manually deactivated before any
audio signal will be sent through these outputs. This
ensures total protection of speakers when entering
into a mode that could prove potentially dangerous
to them.
Selecting Crossover Frequencies
Selecting the frequency at which the audio will be di-
vided is relatively simple. In stereo mode, you should
fi rst press the X-OVER Key, then, using the XOVER/EDIT
jog wheel, adjust the frequency between 250 Hz and 10
kHz. All frequencies below your crossover frequency will
be sent to the low output of the selected channel, and all
frequencies above will be sent to the high output of the
selected channel. In mono mode, you are actually able
to select 2 crossover frequencies on a single channel.
This means you will be outputting low frequencies and
high frequencies, as well as middle frequencies. To do
so,
fi rst press the X-OVER Key. Doing this repeatedly
will alternate between XOVER 1 and XOVER 2, as the
LEDs will indicate.
NB.
The Crossover frequency of XOVER 2 will not exceed that of XOVER
1, providing protection against using excessive frequencies with
incorrect speakers.
A 'Butterworth' Curve
The i7200 XrossTech allows the user to select the angle
of the curve (created in true Butterworth style) of every
frequency range's signal (
ie.
the Highs, Lows and Me-
diums each share the same curve shape). To select the
curve angle, simply press and hold the X-OVER key
continuously for three seconds. The Numeric Display
will then show F, followed by the currently used setting.
By turning the XOVER/EDIT jog wheel, you can then
select the curve from either 6, 12, 18 or 24 decibels per
Octave (where 18 dB is the default setting).
Inverting the Phase
By pressing the Phase button, you are able to select
from the 4 separate output channels. Continually pushing
the button will allow you to scroll through these differ-
ent output channels, and turning the XOVER/EDIT jog
wheel enables you to invert the phase of that particular
frequency. This will ensure any out-of-phase outputs are
once again synchronized with one another. This is useful
as to avoid having to rewire out-of-phase speakers, in
correcting for differences in inappropriately positioned
speakers, and in correcting differences created by the
use of a delay.
NB.
When selecting the Phase and Curve Shape, the XOVER/EDIT jog
wheel must be pushed to con fi rm your setting.
Using the Compressor Function
Using the i7200's built in compressor enables you to
ensure your audio is always of the highest quality and
utterly free of distortion. In essence, a compressor re-
duces the level that the audio increases or decreases
at any time, provided of course that the level is above
the selected threshold. For example, if the audio signal
was to be increased by 1.5 dB, it may only be increased
by 1.1 dB when using a compressor - depending on the
ratio chosen by the user. The compressor effectively
reduces the dynamic range of the audio signal, thus
avoiding speaker overload and ensuring the production
of perfect, distortion-free audio, as well as add more
punch to your sound.