Shure PRO MASTER 706 User manual

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The Features ...
you find most useful.. . pre-fader monitor..,200-watt
power amp...exclusive FEEDBACK FINDER'"and
PATCH BLOCK'"
The Reliability ...
you needfordemanding,continuous operation
The Quality...
you'vecometo expect from Shure
CONTENTS
Introduction..
.................................. 3
Controls Connectors Indicators ............... 4
Input Channels ................................ 4
Aux Inputs .................................... 5
Status Indicators ............................... 5
Headphones .................................. 5
DB Peak Indicators ............................. 6
FEEDBACK FINDERT" .......................... 6
Graphic Equalizer. ....... ... 6
Master Controls ................................ 7
Speaker and Power Panel .......................
8
PATCH BLOCK'" Rear Panel ..................... 9
Setups ........................................ .11
Operation ..................................... .14
Maintenance .................................. .14
Troubleshooting ............................... .15
Specifications ................................. .I 6
Speaker Systems ............ .. .17
.....................
Speakers and Accessories .18
Guarantee ..................................... .18
Shipping Instructions .......................... .18
WARNING
To prevent a source of fire or electric shock, do not
expose thisappliance to rainor extrememoisture.

Introducingthe Shure
PRO MRST€RTMPower Console Model
706
. . .aportable, high-power,8-input monophonic mixer- Just look at these features-
amplifier combining the powerand versatility Full200-watt power amplifier
demanded by professionaluserswith the ease of
operationof amuchsmaller,simpler unit.The resultof Six high-impedanceand six balanced low-
years of design concept study and evaluation,the impedance mic inputs
plus two aux inputs plus EQ
PRO MASTER handles any sound job dependably, and PA (power amp) inputs
andwiththevery highestquality.Itcombinessuperior
performancewith a relativelymodest price. It is ideal Six input channels for microphones and aux level
for such diverse applicationsas schools, churches, sources with full controls: volume,attenuation,fre-
hotel and motel meeting rooms,nightclubs,audito- quency equalization, effectsheverb, and monitor
riums-anywhere goodsound is vital, regardless High-and low-impedanceinputs may be used
of room size. simultaneouslv
The PRO MASTER isanallsolid-stateunit,employing
'thelatestdevelopments in highly reliableintegrated Two additional aux channels with volumecontrols
circuit,discrete component,and printedwiring Fullmastercontrols: monitor,volume, effects send,
technology It'seasyto set upand operate-no sepa- reverb return,and reverbhigh-and low-frequency
rate power amps, equalizers or reverb are required. eaualization
And connecting accessory equipment is fast and
convenient.
The PRO MASTER is fullof featuresfor super Outputs for all needs:monitor,effects,headphones,
aux, mic, and speakers (2)
performance and super convenience-the unique Two common mix buses:mix output and equalizer
FEEDBACK FINDER'" helpsmaximizegain before out~ut
feedback,makesfeedback locationandsuppression
fast and easy...exclusivePATCH BLOCK'" rear panel
showsyouwhere you'repatching,helpsyouconstruct
complex circuits using simple patchcords...efficient
"windtunnel" power amp design hastemperature
warning and shutdown LEDindicators.
Itsversatile control panel is human-engineered for
easeof operation: an experienced user can always
get the mostfrom it,even inthe dimmest auditorium,
meeting room,or club,and a beginning user can
operate iteffectively,with minimumindoctrination and
with completeconfidence. It'spackaged in a hand-
some, rugged,lightweight,moldedARMO-DUR@
case complete with carrying handleand line
cord storage.
Incombinationwith Shure's PRO MASTER Speaker
Svstems,vou've aot a sound reinforcementsvstem
Balanced mic output for "house"systems
Unique FEEDBACK FINDERwith LED readout
instantlyidentifiesfeedback frequency bands
10-bandgraphic equalizer with minimum phase,
combining-typefilters. Lowestfilter is -12 dB/
octavecut-only switch;othersare 213dBadjustable
Exclusive PATCH BLOCK rear panel showsyou
where to patch-jacks are located right inthe block
diagram
Built-inreverb unit with provisionsfor externalonloff
switching and externaleffects devices
Regulated24Vdc simplex supply for powering
condenser microphones
tiatat'side'alfor every application. Need more bapabil- Bright red
LED indicators show input clipping,
ity?The PRO MASTER is super-expandable-use power amp peak output level, power amp overload,
accessory mixersor power amps, stage monitor power-on,temperature warning,and shutdown
speakers, effects devices, whateveryou needcan
easily beadded.And it'sall backed by Shure'stra-
m Protectedagainst damage from open-or short-
ditional quality and reliability.It'sthe sound you need circuitson inputs or outputs
;. .whenyou need it.. . and where you need it. Protectedagainst heat damage by ultra-reliable
coolingfan and automatic thermal shutdown circuit
Protectedagainst radiofrequency interferenceand
line noise
Operates on as low as 100Vac (at reducedoutput)
Ruggedmolded ARMO-DURcase with carrying
handle and linecord storage
Listed by Underwriters' Laboratories, Inc.;listed by
Canadian Standards Association as certified

Controls Connectors lndicotors
lnpl.Jt Channels (Orangemarks on contios ~ndlcitehasic or nitiaisettnnsi
Basically . ..
MONITOR
Independently controls channel monitor level
to monitoroutput.Adjust for desired monitor
mix when using amonitor system.
EFFECTSIREVERB
Controlsamountof reverberationandlor
externaleffects onchannel.Adjust for des~red
amount (uselow settings for vocals, higher
settingsfor instruments).
HI FREQ EQ
Setschannel treble boost or cut for desired
tone shap~ng.
LO FREQEQ
Sets channel bass boost or cut for desired
tone shaping.
INPUTCLlP
IndicateswhenInputsignal istoohigh.Adjust
INPUTATTEN untilonlyoccasional flashesare
noted.
INPUT ATTEN
Adjusts input attenuationfor channel.
Suggested init~alsett~ngs:condenser micro-
phones or amplified instruments -12 to -30;
normalvocals
-6 to -12; loudvocals -12 to
-24; distant miking 0.
VOLUME
Allows individual setting of channel inputfor
desired signal mix. If setting isconsistently
low (1or
2), or high (8 to lo),adjust INPUT
ATTEN.
Inputs:
Bothinputsmay beusedat thesametimewith
similar microphones (one highand one low
impedance),allowing upto 12microphones
simultaneously.
HI IMP
Providesfor connectionof high-impedance
microphones, direct instrumentpickups,
keyboards,amplified instruments,tape
recordersor other high-level sourcesto
channel input.
BAL LO IMP
Providesfor connection of low-impedance
dynamic, ribbonor condenser microphones
andother low-level inputsto channel input.
(Don't usewhen high-level source is used on
HI IMPinput.)
Inoddition. ..
MONITOR
ControlprecedesVOLUME ("pre-fader")and
other channel controls; not affected byVOL-
UME,EQualizers,or EFFECTSIREVERB.Only
affected by INPUT ATTEN, allowing totally
independent monitor mix.
EFFECTSIREVERB
This channel send control followsthe INPUT
ATTEN, VOLUME and EQ controls. Can be
usedsimultaneouslywith reverband external
effects devices,or as a second monitor
("post-fader")to the EFFECTS OUTPUTjack
HI FREQ EQ
Adjusts channel 213 dBat 10kHz on all out-
puts except monitor;does not affect monitor
output.
LO FREQ EQ
Adjusts channel 2 13dBat 100Hzon all out-
puts except monltor;does not affect monitor
output
INPUT CLlP
Lights approximately 3dB prior to clipping
of preampor input channel equalizer.For
optimum signal-to-noise ratio,adjust INPUT
ATTEN for occasionalflashes (nolight may
mean noisyoperation;constant light means
distortion).
INPUT ATTEN
Adjusts gain of preamplifier to permit channel
to accept microphone levelsignals,direct
instrument pickups,or high levelaux signals
from amplified instrumentsor tape recorders;
almost any input device can be
accommodated.
VOLUME
Affects alloutputs except monitor;does not
affect monitor mix.
HI IMP
Can beusedwith line matchingtransformer
(ShureA95FP)to allow two low-impedance
microphones on channel (not recommended
for two condenser microphones).
BAL LO IMP
Also may beusedto power mostcondenser
microphones suchas the Shure SM81; built-in
+24 ~dcsimplex power supply voltage
activated by rear-panelswitch.

I Rux Inputs
Channels 7and 8are aux level inputs, providingadditional input
capabilitiesfor tape recorders,synthesizers,amplified instruments,back-
ground music sources, preamplified phonographs,or other mixers.These
channels haveAUX INPUTphonejacks, VOLUME controls for settlng the
channel inputmixlevel.To playastereotapeinmono,connectthe lefttape
channel to AUX INPUT7and the right tapechannel to AUX INPUT 8. If
equalization, reverbleffectsand monitorare desired,usetwoof thefirst six
HI IMP input channels with proper inputattenuation.
These inputs canalso be used for the return signal from an external effects
dev~ce(delay,echo,etc.)driven by the EFFECTS OUTPUT
When an additionalmixer (suchas the Shure M68,M67or SRIOI) is
connected to channel
7 or 8,the aux channel volumecontrol becomes a
submaster control
The orange control marks indicatebasic or initialsettings
LED Stotus lndicotors
POWER-lnd~cates applicationof ac voltage to power supplywhen
rear-panelON-OFFswitch is turned on.
TEMP WARNING-Lights when unusuallyhightemperature of 70°C
(158°F)is reached on the output transistors. Indication may bedue to
blockageof air louvers,dirty air filter, or operating the console at a high
output levelwith a low load impedance (toomanyspeakers or a short-
clrcuitedoutput). Indicatorwill turn off when transistor case temperature
drops below 70°C. If indicator lights,it is advisabletoidentifythe cause and
makecorrections to avoid shutdown.
SHUTDOWN-When indicator ison,poweramplifier isturned off (allother
circuits remainon).The console may shut downfor one of the following
reasons:
(I) excessive temperaturedue to inadequate cooling (seeTEMP
WARNING),
(2) dcvoltage on speaker lines due to powertransistorfailure
(checkforthisconditionbyturningtheconsoleoff andturning it backon),or
(3) airflow blockage dueto fan failureor air passageobstruction.
- Heodphonss
A %inch phone jack is available for connection to a pair of stereohead-
phones.Thejack is wired to the power amplifier.The signal levelto the
headphonesfollowsthe MASTER VOLUMEcontrol.Theheadphones allow
the console to beused as amixer for tape recording.The speakers can be
disconnected to avoid feedback.
POWER I
TEMP SHUTDOWN
WARtjthiG
I
HEADPHONES