ACTIVECROSSOVER
CX-152
CX-153
CX-154
REFERENCE
MANUAL
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OPERATION
1
READBEFOREUSING
Caution:Thefollowingmustbeobservedtopreventmalfunctioningand/orpossibleequipmentdamage.
1.BeforepluggingtheunitintothemainACline,makesurethatalloftheequipmentfollowingthehecrossover
outputlinesisturnedofforalloftheinputsareturneddown.
2.TheunitshouldbepluggedinonlywhenithasbeenestablishedthatmainAClineissupplyingthecorrect
voltageandfrequency.
3.Neverchangethefrequencyrangeswitchfromthex10tox1position(orviceversa)withthecrossover
outputlevelspassingsignal.Transientscanresultandspeakerdamageispossible.
Description
TheCX-152,CX-153andCX-154arefourthorderlinkwitz-Rileyelectroniccrossovers.Theseunitscanbe
usedinawidevarietyofoperationmodels,asshownbelow.
CX-152
STEREO2-WAY
MONO3-WAY
CX-153
STEREO3-WAY
MONO4-WAY
CX-154
STEREO4-WAY
Allinputsandoutputsarefloatingandbalancedwhenconnected(viaatip,ring,)tootherfloatingandbalanced
equipment.Anycombinationofbalancedandunbalancedoperationispermitted
CX-152
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CX-153
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720 8 21 11 20 2014 15 16 196 20 10 20 2017
CX-154
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FUNCTIONS:
2
(1)Powerswitch
(2)Channel1inputlevel
(3)Channel1subcontrol
(4)Channel1sub-midcrossoverfrequency
(5)Channel1lowcontrol
(6)Channel1low-midcrossoverfrequency
(7)Channel1midcontrol
(8)Channel1mid-highcrossoverfrequency
(9)Channel1low-highcrossoverfrequency
(10)Channel1highcontrol
(11)Channel2inputlevel
(12)Channel2subcontrol
(13)Channel2sub-midcrossoverfrequency
(14)Channel2lowcontrol
(15)Channel2low-midcrossoverfrequency
(16)Channel2midcontrol
(17)Channel2mid-highcrossoverfrequency
(18)Channel2low-highcrossoverfrequency
(19)Channel2highcontrol
(20)sub/low/mid/highmuteswitch
(21)sub/low/mid/highclippingindicator
(22)Channel2highoutput
(23)Channel2midoutput
(24)Channel2lowoutput
(25)Channel2suboutput
(26)Channel2lineinput
(27)Channl1highoutput
(28)Channel1midoutput
(29)Channel1lowoutput
(30)Channel1suboutput
(31)Channel1lineinput
(32)sub/low/mid/highphaseinversionseitch
(33)channelCDboost
(34)Channelcrossoverfrequencyx1/x10selectionswitch
(35)mono/stereomodeselectionswitch
(36)Aclinevoltangeselector
(37)Fuseholder
(38)Powercord
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CDBOOST
3
Theconstantdirectivityhornequalizationcircuitistobeusedwithhornsthatrequireahighfrequencyboost.
Consultyourhornmanufacturertodeterminewhetheritisneededinyourcircumstance.Theprovidedboostis
+3db@3.5kHzrising6dbperoctaveto22.5kHz.(Seefigure1)Nochangesneedtobemadetooperate
withouttheconstantdirectivityboost.
Iftheconstantdirectivityequalizationcircuitisdesiredonaparticularchannelthendepressthecorresponding
switchlabeled"CDBOOST".
Thereisoneswitchforeachchannedllocatedbythatchannelsinputjack.Iftwoormorechannelsareganged
together,thenonlyusetheswitchclosesttotheusedinputjack.Theswitchesclosesttotheun-usedinputjacks
havenoeffectonthecircuitwhenganged.
ClipLED
ThisLEDwilllightwhenoutputcapabilityisbeingexceededwithclippingdistortion.Occasionalflickeringof
theClipLEDisacceptable,butifitremainsoncontinuouslyyoushouldturndownthelevelcontrolorreduce
theoutputleveloftheprecedingcomponenttoavoidaudibledistortion.
RangeX10(onlyCX-152)
WhenthisswitchissetonthecutofffrequencyadjustedbytheHigh/LowFREQUENCYADJUSTknobis
multipliedby10.
ON(FX10):800Hz-9200Hz
OFF(FX1):800Hz-920Hz
LOW/MID/HIGHPHASEinversionswitch
Theseswitchesinvertanphasebetweenthespeakers.Usethemwhenyoufeelabadsoundcontinuitybetween
theLOW,MIDandHIGHranges.
LOWSUMMING
TheCX-152,CX-153andCX-154aredesignedtosumalloranyofthelowoutputsifdesired.
Theshortingconnector"CN4"mustberemovedfromthechannelsbeingsummedandshould,forbestresults,
beinplacewhennosummingisdesired.Shortingconnector"CH4"islocatednearlyinthecenteratthetwo
piecesboard.Youcaneasytofinditwhilethetopplateopened.
CX-152STEREOTWO-WAY
Whenstereotwo-wayoperationisdesiredwiththeCX-152therearenopatchcordsrequired.
Plugtheleftline-inandtherightline-intoINPUT1andINPUT2repectively.FromtheLOWOUT1and
LOWOUT2attachacabletotheinputoftheleftandrightlowfrequencyamplifiers.FromtheHIGHOUT1
andHIGHOUT2attachacabletotheinputoftheleftandrighthighfequencyamplifiers.
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RIGHT RIGHTLEFT LEFT
4
HIGHAMP
1
0
VOL
POWER
VOL
LOWAMP
1
0
POWER
SOURCE
LINE-IN
LOWAMP
1
0
POWER
1
0
CX-152MONOTHREE-WAY
Whenmonothree-wayoperationisdesiredwiththeCX-152thereisnopatchcordsrequired.Plugtheline-in
intoINPUT1.AttachcablefromLOWOUT1tothelowfrequencyamplifier.DonotanythingintoHIGH
OUT2orINPUT2.Modeswitchpushmono.Thesejacksareautomationnormalledwhennothingisplugged
intothem.AttachacableLOWOUT2tothemidrangeamplifier.Attachacablefromhightothehigh
frequencyamplifier.
(CAUTION:JUSTPLACEINTOMONOONMODESWITCHPUSH.)
INPUT1-MAININPUTLEVELCONTROL
LOW1-LOWFREQUENCYAMPLIFIERLEVELCONTROL
HIGH2-SETTO0ANDHIGHMUTE
FREQUENCY1-SETTO"X1"LOW/MIDFREQ.CONTROL
INPUT2-SETTO0
LOW2-MIDFREQUENCYAMPLIFIERLEVELCONTROL
HIGH2-HIGHFREQUENCYAMPLIFIERLEVELCONTROL
FREQUENCY2-SETTO"X10"MID/HIGHFREQ.CONTROL
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HIGHAMP
5
1
0
VOL
POWER
VOL
MIDAMP
1
0
POWER
1
0
LOWAMP
1
0
POWER
SOURCE
LINE-IN
CX-153STEREOTHREE-WAY
Whenstereothree-wayoperationisdesiredwiththeCX-153.therearenopatchcordsrequired.Plugtheleft
line-inandtherightlineintoinput1andinput2respectively.FromtheLOWOUT1andLOWOUT2attach
acabletotheinputoftheleftandrightlowfrequencyamplifiers.FromtheMIDOUT1andMIDOUT2
attachacabletotheinputoftheleftandrightmidfrequencyamplifier.FromtheHIGHOUT1andHIGH
OUT2attachacabletotheinputoftheleftandrighthighfrequencyamplifier.
RIGHT RIGHTLEFT LEFT
HIGHAMP
1
0
VOL
POWER
VOL
MIDAMP
1
0
POWER
RIGHT LEFT
LOWAMP
1
0
POWER
1
0
LOWAMP
1
0
POWER
SOURCE
LINE-IN
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CX-153MONOFOURTH-WAY
6
Whenmonofourth-wayoperationisdesiredwiththeCX-153thereisnopatchcordsrequired.Plugtheline-in
intoINPUT1.AttachcablefromLOWOUT1tothesubfrequencyamplifier.DonotanythingintoHIGH
OUT1orINPUT2.Modeswitchpushmono.Thesejacksareautomationnormallledwhennothingisplugged
intothem.AttachacableLOWOUT2totheLOWamplifier.AttachacablefromMID1tothemidrange
frequencyamplifier.AttachacablefromHIGH1tothehighfrequencyamplifier.
(CAUTION:JUSTPLACEINTOMONOONMODESWITCHPUSH.)
INPUT1-MAININPUTLEVELCONTROL
LOW1-
SETTO0ANDLOW1MUTE
MID1-MIDFREQUENCYAMPLIFIERLEVELCONTROL
HIGH1-HIGHFREQUENCY
AMPLIFIERLEVELCONTROL
LOW/MIDFREQ.1-MIDOUTPUTRANGE,LOWCUTOFFFREQUENCY.
MID/HIGHFREQ1-MID/HIGHFREQ.
INPUT2-SETTO0
LOW2-SUBFREQUENCYAMPLIFIERLEVELCONTROL
MID2-LOWFREQUENCY
AMPLIFIERLEVELCONTROL
HIGH2-SETTO0AND
LOW/MIDFREQ2-SUB/LOWFREQ.
MID/HIGHFREQ2-LOWOUTPUTRANGE,HIGHCUTOFFFREQUENCY.
HIGHAMP
1
0
POWER
MIDAMP
1
0
POWER
SOURCE
LINE-IN
1
0
LOWAMP
1
0
POWER
SUBAMP
1
0
POWER
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CX-154STEREOFOURTH-WAY
7
Whenstereofourth-wayoperationisdesiredwiththeCX-154.Therearenopatchcordsrequired.Plugtheleft
line-inandtherightlineintoinput1andinput2respectively.FromtheSUBOUT1andSUBOUT2attacha
cabletotheinputoftheleftandrightsubfrequencyamplifiers.FromtheLOWOUT1andLOWOUT2attach
acabletotheinputoftheleftandrightlowfrequencyamplifiers.FromtheMIDOUT1andMIDOUT2
attachacabletotheinputoftheleftandrightmidfrequencyamplifiers.FromtheHIGHOUT1andHIGH
OUT2attachacabletotheinputoftheleftandrighthighfrequencyamplifiers.
Specifications
FrequencyResponse
LowFrequencyOutput+0-0.5dB10Hz
HighFrequencyOutput=0-1dB20kHz
TotalHamonicDistortion
RL>2kohms
Low
FrequencyOutput<0.01%THD
HighFrequencyOutput<0.02%THD
MaximumOutputLevel
RL>2kohms+21dBu(6.2volts)@
<0.5%THD20-20kHz
MaximumVoltageGain6dB
Constant-DirectivityCorrection+3dB@3.5kHzrisingat
6dB/octaveto22.5kHz
RIGHT LEFT RIGHT LEFT RIGHT LEFTRIGHT LEFT
HIGHAMP
1
0
POWERVOL
VOL VOL VOL VOL VOL VOL VOL
MIDAMP
1
0
POWER
LOWAMP
1
0
POWER
SUBAMP
1
0
POWER
1
0
SOURCE
LINE-IN
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8
CX-152
FrequencyRange
CX-154
FrequencyRange
X180Hzto920Hz
X2800Hzto9.2kHz
HumandNoise(20Hz-20kHz)
Av=0dB.fc=800Hz
LowFrequencySection
Output@0dB<-106dBu
HighFrequencySection
Output@0dB<-97dBu
Signal-To-NoiseRatio118dB
Controls
InputLevelContinuouslyvariable
OutputLevelLow,HighCont.Variable
CDBoostRearpanelswitch
MuteFrontpanelswitch
ChannellinkRearpanelswitch
PhaseRearpanelswitch
Sub-Low
LowMid90Hzto900Hz
Mid-High800Hzto8kHz
HumandNoise(20Hz-20kHz)
Av=0dB.Fc=46,200,1k,5kHz
SubFrequencySection
Output@0dB<-95dBu
Low
FrequencySection
Output@0dB<-94dBu
MidFrequencySection
Output@0dB<-94dBu
HighFrequencySection
Output@0dB<-92dBu
Signal-To-NoiseRatio11dB
Controls
InputLevelContinuouslyvariable
15Hzto92Hz
4
CX-153
FrequencyRange
LowMid100Hzto920Hz
Mid-High800Hzto9.2kHz
HumandNoise(20Hz-20kHz)
Av=0dB.Fc=230.2.3kHz
LowFrequencySection
Output@0dB<-98dBu
MidFrequencySection
Output@0dB<-95dBu
HighFrequencySection
Output@0dB<-93dBu
Signal-To-NoiseRatio11dB
Controls
InputLevelContinuouslyvariable
4
OutputLevelLow,HighCont.Variable
PhaseLow,Mid,Highrearpanelswitches
Muterontpanelswitch
CDBoost
Sub,Mid,
Sub,Low,Mid,Highfes
Rearpanelswitch
OutputLevelLow,HighCont.Variable
Phasees
Muterontpanelswitch
CDBoost
Channellink
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Rearpanelswitch
Low,Mid,fes
Rearpanelswitch
Rearpanelswitch
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