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APart MA247MR Руководство по эксплуатации онлайн [12/24] 758464
![APart MA247MR Руководство по эксплуатации онлайн [12/24] 758464](/views2/1990179/page12/bgc.png)
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interrupted, the backup power will automatically keep the unit operational. Please note that maximum
output power of the internal power amplifier is limited when operating on the emergency supply.
24Vsupplycurrentis20Amax.
20.Priorityoutput:24VDCispresentonthisconnectorwhenpriorityisactivated.Youcanusethe24
VDCtoswitchlocalvolumecontrollersrelays.Warning,maximum0.6A!!!Donotexceedmaximum
output current, do not short-circuit this output and do not apply any foreign voltage to this output!
Thisisthegeneral24Voutput,activewhenpriorityisactivatedinanyzone.Therearededicated
priorityoutputsperzoneavailableonconnector‘34’.
21.Directspeakeroutputs:Thisisthedirectamplifieroutput,availablein100V,70Vandlowimped-
ance.Fornormaloperation,leavethe100Vwirebridgebetween‘21’and‘22’inplace.Thewire
bridge connects the internal amplifier’s output to the integrated volume control and speaker switching
circuitry. When a separate paging amplifier is in use, this wire bridge MUST be removed. Never use
the4ohmoutputtogetherwithany50V,70V,100Vorzoneoutput.
Wire bridge in case of standalone use.
Remove when using an external paging amplifier.
22.Externalpagingampin:connectthe100Voutputfromanexternal500Wattmaxpagingamplifier
here.Thisisusefulinsituationswhereyouwanttoseparatecertainzonesfromeachother,e.g.some
zoneswillneedmusiconly,andotherzoneswillneedpagingandmusic.Theexternalamplifierwill
takecareofthepoweramplificationofthepagingmessages.TheMA247takescareofallswitching
and signal processing.
EXPERT TIP:
Youmaywonderwhytheexternalamplifiercanbemorethan240watts.Supposeyouhavealotof
speakersconnectedtozone5and6,thesearethe70voltszonesbydefault.Whenpoweredbythe
internalMA247amp,theloadontheinternalamplifierisonlyhalfofthepowercomparedtothepower
in100volt.Whenyouswitchthesezonestotheexternalpagingamplifier,thesesilentzoneswillbecome
100voltzones,meaningthattheexternalamplifierwillseedoublethepowercomparedtothe
internal amplifier.
23. External paging amp pre out: the line level signal for the external paging amp is present on this
balanced euroblock.
24.Pagingmodeswitch:Whenpushedin,youcanuseanexternalpagingamplifier.Theexternalampli-
fiertakescareofthepagingmessages.Whennotpushedin,allsignalsareamplifiedbytheMA247
internalamplifieronly.Asaconsequence,instandaloneuse(switchnotpushedin),musicwillbe
muted whenever a paging message is sent. Please note that the wire bridge MUST be present in
standalone applications in order to hear paging messages.
25.Powerampin–preout:hereyoucanconnectanexternalsignalprocessor,e.g.anequalizer.Inall
other cases, leave the signal bridge in place or there will be no output from the power amplifier. You
Содержание
- Manual 1
- Amplifier here 10
- Can be set with knob 8 only and bypasses all other level controls the emergency signal is also 10
- Emergency input with priority contact the emergency input has highest priority the emergency level 10
- Loudspeaker output connector zone 2 zone 2 is a 100 volt speaker line output compatible with 100 10
- Loudspeaker output connector zone 3 zone 3 is a 100 volt speaker line output compatible with 100 10
- Loudspeaker output connector zone 4 zone 4 is a 100 volt speaker line output compatible with 100 10
- Loudspeaker output connector zone 5 zone 5 is a 70 volt speaker line output compatible with 100 10
- Loudspeaker output connector zone 6 zone 6 is a 70 volt speaker line output compatible with 100 10
- Present on the preamp out connectors you can activate the emergency input by closing a contact between the gnd and prior connections or alternatively activate the input by setting the automatic vox circuitry set the internal jumper marked s3 to the vox position and set the threshold level with vr13 the jumper and level adjustment are located inside the unit on the rear pcb in order to reach them you will need to open the unit for authorized persons only 10
- Rear panel 10
- Volt speaker lines com speaker ground 100 v speaker plus connection 10
- Volt speaker lines com speaker ground 70 v speaker plus connection if this zone is selected for paging it will become a normal 100 volt line use this output for your silent zones 10
- Www apart audio com 10
- Zone 1 balanced line level output this is the line level output for zone 1 connect your external 10
- Emergency 15
- Mic line 2 15
- Mic line 3 15
- Mic line 4 15
- Music inputs 15
- Paging 1 15
- Priority levels 15
- Info apart audio com 17
- Selective paging without an external paging amplifier will cause interruption of the bgm in the non paged zones in case a zone is being paged the ma247 mr will bypass the internal zone level control caus ing the paging message to be heard at full level in the selected zone s when external volume control lers are in use connect the 24v priority input of the controller to the dedicated 24v zone output of the ma247 mr 17
- What about external volume controls if you use additional external volume controls such as our e vol series be sure to connect the 24 volt priority output from the ma247 to the volume control s 24 v priority input this will bypass the external volume controls allowing paging messages to be heard at full power there is a general 24vdc output and also an individual per zone 24vdc output available max current supplied is 0 a in total with a limit of 0 a for the individual zone outputs as a general rule a normal external volume control such as our e vol series volume controllers con sume about 50 ma when priority is active as a result the ma247 can feed a maximum of 12 external volume controllers 12 x 50ma 0 a with a limit of 6 controllers per zone 6 x 50ma 0 a when third party external volume controllers are in use please check the supply current and polarity of the priority inputs 17
- Info apart audio com 19
- Technical specifications 19
- Www apart audio com 20
- Info apart audio com 21
- Apart audio general warranty conditions 23
- Info apart audio com 23
- Www apart audio com 24
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