Vision manual page:10
3. STANDARD MONO INPUT MODULES
The Vision standard mono input module is a basic input design whereby all signal flow takes place from the
microphone to the direct output as well as to the main left right outputs and group outputs.
3.1 Input section
The input section controls all incoming signals from microphone and line inputs.
A
+48V
phantom power switch for condenser microphones or direct boxes can be silently switched in or out
of the circuit.
LINE
switches the microphone input to line input on the channel.
The line has its own balanced input amp and is controlled by the active (dual) gain control.
When the
GAIN
control is accurately set, it is possible to achieve the very best signal to noise ratio and
maximum headroom required for high quality recordings. This control is for adjusting the
line
and
mic
inputs (with separate electronics), although only one knob adjusts the dual pot.
3.2 Equalizer section
This three-band parametric equalizer is unique in its design. There are three bands, the high and low
with a boost or cut of 16 dB and the mid band is sweep able with a boost or cut of 16 dB.
The
HF
(high frequency) section is a fixed frequency shelving type at 12 kHz with a maximum boost or cut of
16 dB.
The
LF
(low frequency) section is a fixed frequency shelving type at 60 Hz with a maximum boost or cut of
16 dB.
The
MF
(High / Mid Freq.) section has level and frequency controls with variable frequency ranges from 200 Hz
to 7,000 Hz and has a maximum boost or cut of 16 dB. The bandwidth has a Q factor of 1.5.
All level controls are center detented making neutral positions easy to establish.
All frequency ranges have been carefully selected following extensive examination of all types of music (and
noise) which makes this equalizer a pleasure to work with. Noise and distortion are kept to an absolute
minimum.
3.3 Auxiliary Send Section
The Vision standard mono module has four auxiliary send busses. While in the tracking session, some aux
sends are used for feeding the headphones and some are used for effects sends. During the mix session, all
aux sends are used for effects sends.
Aux
iliary sends 1 is switchable between pre and post fader. This Aux buss is normally used for stereo
headphone send in the tracking session. A PRE switch puts them pre fader for fold back purposes.
Aux 3&4
are on single controls with a post fader factory setting. A pre-fader selection is easy accomplished.
The
DIRECT
output follows the post fader signal coming from the fader creating a dedicated aux send for that
channel only. Or it can be used as a multitrack send. The output level is 0 dBu. The output is ground
compensated.
