Formula Sound FF-4.2L, Руководство пользователя

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Input Channels
All 4 channels have 2 inputs; the required input is selected on an input select switch
at the top of the channel.
There is also a GAIN control on each channel to set the maximum level and a linear
channel fader to control the level sent to the output.
All channels have a “full kill” 4 band EQ; the EQ band frequencies are approximately
Bass up to 140Hz, Low Mid 140Hz to 750Hz, High Mid 750Hz to 4.3KHz and
Treble above 4.3Khz.
Each channel has variable frequency high pass and low pass filters that are selected
by a switch. The low pass filter is variable from 20KHz to 2KHz and the high pass
filter is variable from 20Hz to 2KHz. The filters should be selected before the audio
is routed to the output as there may be a small click if the filter is selected live.
These filters operate best with a signal level of around 0dB, the filters on any channel
should be selected before the audio is routed to the output as there may be a small
audible click if the filters are selected live. Once selected the filters can be set to
20Hz and 20KHz where they have a minimal effect and the frequencies adjusted
either live or on cue.
Each channel has a 12 LED meter to indicate channel level, left and right are summed
to mono and the level adjusted by -6dB so that the input meter indicates an average of
left and right indicated in the output (the channel indication will show the same level
as left and right output meter indication if left and right are equal).
Each channel also has a clip LED to indicate when the input is excessive or clipping.
All channels have 2 AUX sends operated on switches and a CUE select switch for
headphone monitoring.
Channel 1
A microphone input on an XLR and a balanced stereo line input on a pair of ¼” jack
sockets is provided. The input to be used is selected by an input select switch.
The microphone input has a gain trim and phantom power switch recessed in the base
of the unit (see appendix 3). Phantom power is on when the switch is depressed.
The microphone can be routed to be included in the booth or excluded from the booth
by a switch in the base of the unit (see appendix 3). Microphone signal is included in
the booth when the switch is depressed.