Cadac LIVE1 User Manual download pdf (Page 29)

Revision L1.1 2011-12Live1

PFL/AFL and monitoring

This section of the Master strip is concerned with selection and control of

the Live1’s PFL/AFL system, which permits inputs, sends and returns to

be monitored either individually or in combination. Monitoring may be via

headphones plugged into the rear panel PHONES connector, or via an ampliﬁ er

and loudspeakers connected at the rear panel MON L and MON R connectors.

Note that if headphones are used, their impedance should be 16 Ω or greater.

PHNS – this controls the level of PFL/AFL signal sent to the headphone socket.

MON – this controls the level of PFL/AFL signal sent to the rear panel monitor

outputs.

Meters – a dual, 10-segment LED bargraph meter indicates the level of the

signal(s) currently being monitored by the PFL/AFL system. The meter reading

is independent of the settings of the PHNS and MON controls. In PFL mode,

the left and right bargraphs should show identical levels, but readings will differ,

reﬂ ecting stereo placement, in AFL mode. Note the bottom LED is labelled SIG,

and illuminates at a signal level of approx. -36 dBu. The LEDs are colour-coded

as follows:

red: +18 dBu

yellow: -24 dBu to +12 dBu

green: SIG

AFL LEVEL – this adjusts the level of the AFL signal. It has no function if global

AFL mode is not selected. It allows the volume of the monitoring in AFL mode to

be trimmed to match what is heard in PFL mode.

AFL MODE – pressing this button switches all PFL/AFL circuitry throughout the

whole mixer into AFL mode. In this mode, when any PFL button on the mixer is

pressed, signal metering and monitoring by the PFL/AFL system will be post the

relevant fader(s), and in stereo. Thus, the relative levels and stereo imaging of

a group of inputs can be assessed. An adjacent red LED illuminates to indicate

the selection of AFL mode.

When not pressed, PFL mode is selected. Pressing any PFL button on the

console will cause the relevant signal to be metered and monitored in mono,

and at ‘full’ level – i.e., one that is not affected by the fader controlling the signal

in the mix.

PFL is useful when checking all that individual sources feeding the mixer

are present and correct. AFL is more useful for listening to several signals in

combination (i.e. group of voices, or a drum kit), so that their relevant level and

stereo placement can be checked.

Master Aux Pre/Post

These three buttons globally switch the Auxiliary sends in pairs to be pre- or

post-fade. Note that all Auxiliary sends are derived post-mute in the channel or

return in which the send is located.

A1&2 PRE – press this button to make all mixer sends to Auxiliaries 1 and 2

pre-fade. An adjacent green LED illuminates to conﬁ rm PRE mode has been

selected.

A3&4 PRE – press this button to make all mixer sends to Auxiliaries 3 and 4

pre-fade. An adjacent green LED illuminates to conﬁ rm PRE mode has been

selected.

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Cadac LIVE1 User Manual Page 29

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