USING YOUR
SPIRIT LIVE 4
CONSOLE
The final sou nd from you r P.A. system can only ever be as
good as the qu ality of the sou rce signal. Ju st as you need to
becom e fam iliar w ith the control fu nctions of you r m ixer, so
you m u st recognise the im p ortance of correct choice of inp u ts,
m icrop hone p lacem ent and inp u t channel settings. H ow ever,
no am ou nt of carefu l setting u p can take accou nt of the
sp ontaneity and u np red ictability of live p erform ance and the
m ixer m u st be set u p to p rovid e ‘sp are’ control range to
com p ensate for changing m icrop hone p osition and the
absorp tion effect of a large au d ience (d ifferent acou stic
characteristics from sou nd check to show ).
The front panel drawing inside the rear cover shows
typical initial control positions which may be found a
useful guide to setting up the mixer for the first time.
Initia l Set Up
The d iagram on p age 5 d em onstrated how the m atching of
inp u t gain to the signal sou rce w as cru cial to avoid d istortion
at one extrem e and excessive noise at the other. Set u p
ind ivid u al inp u t channel as follow s:
•
Connect the inp u t requ ired (m icrop hone, keyboard etc.)
N ote: Phantom p ow ered m ics shou ld be connected before
the +48V is sw itched on.
•
Set Master fad ers at 0, inp u t fad ers at 0, and set p ow er
am p lifier levels to abou t 70%.
•
Provid e a typ ical p erform ance level signal and p ress the
PFL bu tton on the p articu lar channel, m onitoring the level
on the right-hand m eter.
•
Ad ju st the inp u t gain u ntil the m eter is ju st reaching the
am ber section (0d B) at a typ ical m axim u m sou rce level.
This allow s su fficient head room to accom m od ate p eaks
and establishes the m axim u m level for norm al op eration
(bu t see note below ).
•
Rep eat this p roced u re on other channels as requ ired . As
m ore channels are ad d ed to the m ix, the m eters m ay m ove
into the red section. Ad ju st the overall level u sing the
Master Fad ers if necessary.
Pa g e 20
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