GENELEC'
1029A
ActiveMonitoring
System
Generaldescription
Thebi-amolifiedGENELEC10294isa two
way
activemonitoring
speakerdesignedtobe
smallbutstillhavehigh
output,
low
coloration,
andbroadbandwidth.
The10294is
idealfornearfieldmonitoring,
mobile vans, broadcast and TV control
rooms, surround sound systems, budget
homestudios,multimedia
applicationsand
also for use with comouter soundcards.
As an active speaker,it containsdrivers,
power
amplifiers,
activecrossoverfiltersand
protection
circuitry.The Directivity
Control
WaveguiderM
(DCWTM)
technology used
provides
excellentfrequencybalance in
difficultacousticenvironments.lf necessary,
the bass resoonse
of the 1029A's
can be
extendedwith a Genelec7050A or 70604
subwoofer.
Integrated
Construction
As the amplifiersarebuiltintothespeaker
enclosure,theonlyconnectionsrequired
are
the mainssupply
and the line level
input
signal,makingthe 10294very
easyto set
upanduse.Theintegrated
designallowsthe
amplifiersandthedriversto becalibratedas
asingle
unitatthefactory.Thiseliminatesthe
effectsofcomponenttolerances
andensures
consistent
quality.
Thecastaluminium
cabinet
has roundedcorners and a hard-wearino
painted
outer
surface.
Drivers
The bassfrequenciesare reproduced
by a
130mm (5")
bassdriver
mounted
in a 4.5
litrevented
cabinet.The -3 dB ooint
lies
at
68 Hz and thefrequencyresponse
extends
downto65 Hz(-6
dB).
The highfrequency
driveris a 19 mm
(3/4")
metaldome.
Uniformdispersioncontrol
is achieved with the revolutionaryDCW
Technology
pioneered
by
Genelec,
whichhas
also resultedin perfect phase and delay
uniformityatthecrossover
frequency.
Magnetic
shieldingis standardon the
10294.Shieldingis vital for applications
suchas videopostproduction,
where
stray
magneticfieldsmust
be
minimized.
Crossover
Theactive
crossover
network
consistsoftwo
parallel
bandpassfilters.Acoustically,thefil-
tersarecomplementaryandthe
slopesare
24- 32 dBloctave.Thecrossoverfrequency
is 3.3 kHz.The active crossovercontrols
('treble
tilt',
'bass
tilt'and'bassroll-off')
allow
this speaker
to be exactlymatchedto any
application.
Amplifiers
The amplifierunitis built
into
the speaker
enclosure.The bass and trebleamolifiers
both
produce
40W ofoutput
power.
Thefast,
low
distortionamplifiersare capableof driv-
ing
a stereo
pair
to peak
outputsound
pres-
surelevelsinexcessof 110dBat 1 m.The
unit
incorporates
specialcircuitryfordriver
overload
protection.
Variableinput
sensitivity
allowsforaccuratelevelmatchino.
Installation
Each10294
monitorissuppliedwithaninte-
grated
amplifierunit,mainscable
and an
operatingmanual.Afterunpacking,
place
the
loudspeaker
initsrequiredlistening
position,
taking
note
of the lineof the listening
axis
(see
Figure1).Before
connectingup,ensure
thatthemainsswitchisoff
andthe
volume
control
fully
counter-clockwise
(see
Figure1).
Checkthatthemainsvoltage
selector
iscor-
rectlyset
(models
soldinEuropehave
afixed
230V
setting).
Audioinput
isviaa 10kOhm
balancedXLRconnector
ora 10kOhm
bal-
anced
1
14"Jack.An unbalancedsourcemay
beusedaslongaspin
3 is
grounded
topin1
attheinput
(see
Figure2).Oncetheconnec-
tionhasbeenmade,thespeakersareready
to beswitchedon.
Setting
thevolume
control.
The input
sensitivityof the speakerscan be
matched
to the outputofthe mixingdesk
or
othersourcebyadjustingthevolume
control
onthefront
panel(see
Figure1).
Settingthetonecontrols
Theresponse
of
the
systemusuallyhastobe
adjustedto matchtheacousticenvironment.
The adiustmentis doneby settingthe tone
controlswitchesonthe rearDanel.
Thetone
control has four switchesand can adjust
'treble
tilt',
'bass
tilt'and'bass
roll-off.'The
factory
settings
for these are 'ALL OFF'to
givea flat anechoic
response.
SeeTable1
for suggestedtonecontrolsettingsin differ-
ing
acousticenvironments.
Figure4 shows
the effectof the controlson the anechoic
response.Always
startadjustmentbysetting
allswitches
to 'OFF'
oosition.
Thensetthe
switch
ifneeded
tothe'ON'oosiiion
toselect
theresponsecurveneeded.
Monitor
placement
Consoletopmounting
lfthe 10294's
areused
fornearfieldmoni-
toring,avoidmountingthemdirectlyonthe
consoletop. Instead
position
the speakers
slightlybehindthe consoleby usingfloor
stands,
wallmounts
or microphonestands.
Thisminimisesthe reflection
from
thecon-
solesurface
from
colouring
thesound.
Room placement
Itisvitalthatthemonitorsareconectly
posi-
tioned
in
theroomasthis
greatly
affects
their
performance.
To
produce
atrue
andaccurate
stereoimagethemonitorsmusthaveexactly
similarfrequencyresponses,
whichistrue
infreefieldconditions.Thefrequencycharts
shownare for free fieldconditions.
When
placed
ina roomtheresponsechangesdue
to reflectionsol the wavefrom the room's
boundaries.ltisthereforenecessary
toplace
the monitors
at thesameheightandalsoat
the same distancefrom the front and side
wallsso that the reflections,and therefore
thechangesto thefrequency
response,are
thesame.
Thedistancefromthefrontwall
should
be
eitherlessthan 1 m, or alternatively
more
than 3 m to avoid an uneven frequency
response
due to retlectionsfrom the wall.
lf the speaker
is placed
closeto the wall
(<1m)thiswillboost
the lowerfrequencies
and
thetone
controlsshould
thenbeadiusted
appropriately
(see
Table1).
The monitorsshouldbe aimedtoward
the
listening
position.
Thisis dueto the effectof
