Cadac CDC four User Manual download pdf (Page 49)

Revision 1 2012-13CDC FOUR

FX sends and returns

The two FX channels in the CDC FOUR differ from the other channel types in

that they are entirely internal to the mixer and have no external signal inputs or

outputs.

As shown in the channel descriptions above, all mono and stereo input channels

are able to send to the two internal FX busses, FX 1 and FX 2, via the dedicated

controls on the CAM, or their virtual on-screen equivalents. The signals on the FX

busses are summed in the normal way (though wholly in the digital domain) and

may have EQ and dynamics applied in the same way as other types of channel. The

signal is then passed to a DSP FX processor, which can add time-domain effects

such as reverb and delay. (See “FX processing” on page 58 for more details of

the effects themselves). The processed signal (now in stereo) is then available to

be fed back into the mix (and elsewhere) via the two FX return faders FX 1 and

FX 2; these are faders 13 and 14 in the OUTPUTS layer. This process is exactly

analogous to patching in an external FX unit to an analogue mixer, where an

Aux send would be used to send a signal from one or more channels to the FX

unit, and the unit’s output would be brought back into the mixer via dedicated FX

returns or spare channels as available, or desired.

The CAM and the TFT display are available to an FX channel when the OUTPUTS

layer is selected. Pressing the SEL button above one of the faders assigns the

FX channel to the CAM and screen.

On the CDC FOUR, the FX channels have an almost identical set of controls to

a mono channel, although they are treating a stereo signal; this includes EQ,

routing and Aux sends. For this reason, only the differences from a mono channel

are summarised below. The description of the mono mic/line channel applies in

all other respects. Refer to Page 32 onwards for full details.

Input stage:

All input functionality is removed. The Input Trim, high-pass lter and phase

controls are inoperative and their virtual counterparts do not appear on-screen.

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Cadac CDC four User Manual Page 49