SoundCraft Spirit Monitor manual Talkback, Dim, Pfl, Bargraph Meter

	switch is pressed (LED illuminated).
4.	HI-PASS FILTER
	A variable frequency filter is provided covering a range of
	20Hz to 200Hz., and this is always in circuit. This may be
	found useful to reduce the level of stage-driven low frequency
	feedback, or particularly to tailor the output frequency to
	match more closely the frequency range of smaller wedge
	monitor speakers which may not be able to tolerate high lev-
	els of LF signal. Rotate the control fully anticlockwise when
	the filter is not required.
5.	TALKBACK
	Pressing the TALKBACK switch routes the engineer’s talk-
	back microphone signal to the monitor output, at the level set
	on the T/B gain control on the Master section, and inde-
	pendent of the output fader level. At the same time the local
	monitor mix is dimmed by approximately 6dB to allow the
	engineer’s voice to be heard over the mix, and the Wedge out-
	put also dims to prevent feedback through the talkback mic.
	Note that Talkback is disabled when DIM is pressed.
6.	DIM
	Pressing the large DIM switch attenuates the monitor output
	by 6dB as an immediate way of eliminating feedback while
	the source of the problem is identified.
7.	PFL
	When the PFL switch is pressed, the Pre-Fade signal is fed to
	the headphones, replacing the normal submix signal. The
	PFL ACTIVE LED on the master section illuminates to warn
	that the wedge/phones outputs and the meter are now re-
	sponding to the PFL selection and the PFL LED on the input
	channel lights to identify the active channel. This is a useful
	way of listening to any required signal so that adjustments
	can be made or problems traced.
8.	BARGRAPH METER
	A sixteen segment, three colour bargraph meter monitors the

output signal. The meter has a peak response, and since it reads the final output signal it will also be affected by the DIM switch and include any talkback signal. The bargraph may be calibrated by a trimmer accessed via a hole in the panel above the meter. Adjustments may be made using a

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