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MX1260

OSD Audio MX1260 Owner's manual

  • Hello! I've reviewed the OSD Audio MX Series Multi-Zone Amplifier Owner's Manual. This document provides details on the features and setup of the MX880, MX1280, and MX1680 models. It explains their multi-channel amplification with bridging capabilities, individual zone controls, and protection circuits. I'm ready to answer any questions about these amplifiers and their usage.
  • What is the power output of the MX Series amplifiers?
    What does the Zone LED indicate?
    What is the minimum speaker impedance for the amplifiers?
MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL
MULTI-ZONE
DIGITAL AMPLIFIER
MX SERIES
MULTI-ZONE
DIGITAL AMPLIFIER
MX SERIES
WARNING
• TO PREVENT FIRE OR SHOCK HAZARD, DO NOT USE THIS PLUG WITH AN EXTENSION
CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO
PREVENT BLADE EXPOSURE.
• TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
MOISTURE.
• TO PREVENT ELECTRICAL SHOCK, MATCH WIDE BLADE PLUG TO WIDE SLOT, FULLY IN-
SERT.
Thislightingashwitharrowhead
symbol,withinanequilateraltriangle,
isintendedtoalerttheusetothepres-
enceofun-insulateddangerousvoltage
withintheproductsenclosurethatmay
beofsucientmagnitudetoconstitute
ariskofelectricshocktopersons.
Theexclamationpointwithinthe
equilateraltriangleisintendedtoalert
theusertothepresenceofimportant
operatingandmaintenance(servicing)
instructionsintheliterature
accompanyingsuppliance.
Thislightingashwitharrowhead
symbol,withinanequilateraltriangle,
isintendedtoalerttheusetothepres-
enceofun-insulateddangerousvoltage
withintheproductsenclosurethatmay
beofsucientmagnitudetoconstitute
ariskofelectricshocktopersons.
IMPORTANT SAFTEY INSTRUCTIONS
1.Readtheseinstructions.
2.Keeptheseinstructions.
3Readallwarnings.
4FollowallInstruction.
5.Donotusethisapparatusnearwater.
6.Cleanonlywithdrycloth.
7.Donotblockanyventilationopenings.Installinaccordancewiththemanufacturersinstructions.
8.Donotinstallnearheatsourcessuchasradiators,heatregisters,stoves,orotherapparatus(includingampliers)that
poduceheat.
9.Donotdefeatthesafetypurposeofthepolarizedorgroundingtypeplug.Apolarizedplughastwobladeswithone
widerthantheother.Agroundingtypeplughastwobladesandathirdgroundingprong.Iftheprovidedplugsdoesnot
tintoyouroutlet,consultanelectricianforreplacementoftheobsoleteoutlet.
10.Protectthepowercordfrombeingwalkedonorpinchedparticularlyattheplugs,conveniencereceptacles,andat
thepointwheretheyexitformtheappliance.
11.Onlyuseattachmentsoraccessoriesspeciedbythemanufacturer.
12.Unplugtheapparatusduringlightningstormsorwhenunusedforlongperiodsoftime.
13.Referallservicingtoqualiedpersonnel.Servicingisrequiredwhentheapparatushasbeendamagedinanyway,
suchaspowersupplycordorplugisdamaged,liquidhasbeenspilledorobjectshavefallenintotheapparatus,the
apparatushasbeenexposedtorainormoisture,doesnotoperatenormally,orhasbeendropped.
Introduction
TheOSDAudioMXSeriesMulti-ZoneAmpliersareidealforaddingadditionalpowerindistributedaudioapplicationsor
combining with home theater systems. The MX880 provides 8 channels, MX1280 provides 12 channels and MX1680
provides16channelsofdigitalamplication.AllMXSeriesmodelsincorporatefeaturessuchasbridgemodeoperation,
global and independent zone triggering, audio sense circuitry with delay time per zone, two Bus Inputs/Outputs and
independentlineinputsperzonetomeetthewiderangeofaudioapplicationsandprojects.AllMXSeriesampliersarerated
at50wattsperchannelinto8ohmsand80wattsperchannelinto4ohms.WiththeStereo/BridgeswitchinBridgemode,
eachzoneofchannelsarecombinedforahigherpoweredmonooutputof160wattsinto8ohms.Withhighperformance
andultra-lowdistortionoutput,theMXseriesMulti-ZoneAmpliersprovideunmatchedsoundqualityforanyaudiosystem.
Thermal Protection
All MX series ampliers are designed with special circuitry to safeguard the amplier under a thermal overload
condition.Thermalprotectionmodewillonlyengagewhentheunithasbeenrunathighvolumeforextendedperiodsoftime
withoutadequateventilationand/orwhenspeakerimpedancesarebelowtheminimumlevelsfortheamplier.Inthermal
protectionmodetheamplierwillautomaticallystopoutput.Ifthisfaultoccurs,turnotheamplier,andcheckthatthe
speakerimpedanceratingisabovetheminimumrating.Alsocheckforadequateventilationaroundtheamplierandmake
adjustmentsifnecessary.Oncetheunithascooledtosageoperatingtemperatures,theampliermaybepoweredbackon.
Protection Circuitry
SpecialcircuitryhasbeendesignedintotheMXSeriesMulti-ZoneAmpliertosafeguardunderashort-circuitcondition.
Afaultyspeakercanalsocauseashortcircuitcondition.TheZoneLEDindicatorwillblinkrapidlybetweenredandblue.
If this fault condition occurs, turn o the amplier and check speakers for short circuit conditions when appropriate.
Installation
TheMXSeriesMulti-ZoneAmplierscanbeplacedonashelf,aspartofanequipmentrack,oronatableorcabinet.
During installation, keep in mind that the amplifers require proper clearances for ventilation and heat dissipation.
Theamplierwilltaketworackspaceswiththefeetremoved.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL
MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL
1. Power/Standby LED
ThisLEDlightsredwhenanyzoneisactiveorthe
amplierisinstandbymode.
Front Panel
2. Zone LED
Blue:thecorrespondingzoneispoweredon.
OFF:thecorrespondingzoneiso(standbymode).
Red/Blue:Ashortcircuithappensonthespeakeroutputs
Rear Panel
1. Bus 12VDC Trigger In/Out
TheBus12VDCTriggerInisusedtoactivateallzonesthatare
usingtheBusInputanddisablesotherzonetriggersorsignal
sensingonthosezoneswhenitisused.WhetheBus12VDC
Triggerisused,allBus-controlledzoneLEDswillbeblueandac-
tive.IftheBusTriggerInhas12Vappliedtoit,onlythe12VBus
TriggerOutwillhave12VandtheZoneTriggerOutputswillnot.
2. Bus Inputs/Outputs
TheBusLineInputsareoptionalinputsthatcanbeusedtocon-
nectasinglesourcetomultiplezones.TheBusLineOutputsare
passivepassthroughthecorrespondingoftheBusInputsand
canbeusedtodaisychainthesourcetootherampliersinthe
system.
3. Line/Bus Switch
SwitchesthezoneinputtotheLineInput,BusInput1or
BusInput2.
4. Line Input
TheLineaudioinputforeachzoneisadedicatedsensinginput
thatwillactivatethezonewhenanaudiosignalfromasourceis
present.
5. 12VDC Trigger In/Out (Each Zone)
TheZone12VTriggerInisusedtoactivateaspeciczone.
TheZoneTriggerOutcanbeusedtotriggerother12Vdevices.
Thedelayandaudiosensingarebypassedwhenthe12VZone
TriggerInputisused.WhenaZoneTriggerisactive,thezoneLED
willbeblue.IfnovoltageispresentintheZoneTrigger,theZone
LEDwillbeo.StandbyModeTheamplierwillgointoStandby
modewhenaudiosignalortriggerisnotpresentafter3munites.
6. Speaker Outputs
Theminimumspeakerimpedanceis4ohmsforStereoModeand
8ohmsforBridgeMode.
7. Stereo/Bridge Switch
SelectstheoutputmodeofeachzoneforstereoorBridge
operation.
8. Gain Controls
LeftandRightgaincontrolsforeachzoneadjustthesoundlevel
independently.OnlyusingLeftcontroltoadjustthesoundlevel
whenusedinBridgeMode.
9. Voltage Switch
AC115VorAC230Vdualvoltageselector.
10. AC Input
Applythecorrectvoltagebeforeoperatetheamplier.
Specications
Power Output:
80W/Channel,1KHzinto4Ohms,OneZoneDriven
50W/Channel,1KHzinto8Ohms,OneZoneDriven
160W,1KHzinto8ohms,Bridge
Amplier Channels:
MX880:8Channels,4Zones
MX1280:12Channels,6Zones
MX1680:16Channels,8Zones
Signal-to-NoiseRatio:>90dBA-weighted
Frequency Response:20Hzto20KHz+1.7/-1dBat1Woutputinto8Ohms
Input Sensitivity:600mVfor80W@1KHz4OhmOneZone
  700mVfor50W@1KHz8OhmOneZone
Input Impedance:>22KOhmsLineInput
Trigger Inputs / Outputs:BusandZone@12VDC
Zone Line Input:LineIn,BusIn1,BusIn2selectswitchperzone
Bridge Mode:SelectStereoorBridgemodeperzone8Ohmonly
Speaker Connectors:Detachablespeakerterminalssupportupto14awgwire
Delay Time:Whenaudiosignalortriggerisnotpresentafter5munites.
Power Requirements (Switchable):
MX880: 100-120VAC60Hz600WMax
 220-240VAC50Hz600WMax
MX1280: 100-120VAC60Hz900WMax
 220-240VAC50Hz900WMax
MX1680: 100-120VAC60Hz1200WMax
 220-240VAC50Hz1200WMax
Fuse Rating:
MX880: 100-120V/T5A,250V
  220-240V/T2.5A,250V
MX1280: 100-120V/T8A,250V
  220-240V/T4A,250V
MX1680: 100-120V/T10A,250V
  220-240V/T5A,250V
Dimensions (L x W x H):16.81”x16.14”x3.46”
Weight:
MX880:19lbs.
MX1280:20.5lbs.
MX1680:22.8lbs.
MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL
MULTI-ZONE
DIGITAL AMPLIFIER
MX SERIES
MULTI-ZONE
DIGITAL AMPLIFIER
MX SERIES
NERO LINK
System Conguration
MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL
Typical Mode
MXSeriesamplierscanbeconguredasthemainamplierforanaudiodistributionsystemorhometheatersystem.
Whenusedwithanaudiodistributionpreampormatrixprocessor,eachzonecanindependentlydriveoneofseveral
dierentsourcesbyusingeachzone’sindividuallineaudioinputs.Ifthespecifyzoneneedsahigherpower,pleasejust
useBridgedmode.
WhenMX1280orMX1680isworkingasahometheateramplier,theampliercouldsupportuptoa7.1or5.1surround
system,andrecommendusingtheBridgedmodetohavethehigheroutputs.
Bridged Mode
WhentheamplierisinBridgedModeoperation,asinglechannel(theleft)isusedtoprovideahigherpowermono
output.UseonechannelpairtoamplifytheleftchannelbyconnectingtheleftaudiosignaltotheLinputofachannel
pair,settingtheStereo/Bridgeswitchto“Bridge”andconnectingthespeakerasindicatedbelow.Useasecondchannel
pairfortherightchannelbyconnectingtherightaudiosignaltotheLinputofasecondchannelpair,settingtheStereo/
Bridgeswitchto”Bridge”andconnectingthespeakerasindicatedabove.Note:Thethreepositionswitchneedstobe
setto“LineIn”onbothzonesthatarewiredforBridgedMode.
Wiring Instructions - Bridged Mode
• Turnotheamplierandconnectan8-ohmminimumload.
• SettheStereo/BridgeswitchtoBridgedMode.
• FollowtheBridgemodemarkingsonthebackoftheamplier:
Connectthenegativelead(-)ofthespeakercabletotheR–terminal.
Connectthepositivelead(+)ofthespeakercabletotheL+terminal.
• ApplytheLineInfromaudiosourcetotheLeftLineInconnector.
• Powerontheamplier.
Bridge
Trigger
In Out
Vol.LeVol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
AC 115V~
Trigger
AC 230V~
In
In1
Out1
In2
Out2
Out
12 0V~6 0H z,12 00 W FUSE T 10AL ,2 50V
23 0V~5 0H z,12 00 W FUSE T 5AL,250 V
Bus
Bridge
Trigger
In Out
Vol.LeVol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
R L
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
ZONE 6
ZONE 7
ZONE 8
NERO LINKNERO LINK
MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL
Source Source
OSDAudio|Brea,CA|osdaudio.com
OSDMXSeriesAmpliersManual.8/19
MX1680 Multi Zone Digital Amp
SPECIFICATIONS
• Amplier Type: Multi Channel
• Amplier Class: Class D
• Channels: 16 Each; 8 Stereo Zones
• Power Handling: 50W(RMS)/ 100W(MAX) Per Ch. @ 8 Ohm
• Power Handling: 80W(RMS)/ 160W(MAX) Per Ch. @ 4 Ohm
• Bridged Rating (Watts): 320W(MAX) @ 8 Ohm
• Impedance: 8 Ohm and 4 Ohm Stable
• Frequency Response: 20Hz to 20KHz + 1.7/-1dB at 1W
output into 8 Ohms
• Signal to Noise Ratio: 90 dB A-weighted
• 12V Trigger Mode, Bus
• Zone Line Input: Line In, Bus In 1, Bus In 2 Per Zone
• Individual Output Level Controls for Each Channel
• Speaker Connectors: Removable, up to 14AWG
• Dimensions (L x H x D): 16.81” x 3.46” x 16.41”
• Weight: 23 lbs
• Warranty: 2 Years
Our MX1680 is a powerful 8-zone 16-channel digital amplier for commercial and residential
audio systems that require reliable power in multiple zones. A slim 2U, rack-mountable and
cool-running multi-room amplier, the MX1680 includes 12 channels rated at 80 watts each at 4
ohms/50 watts at 8-ohms and can be congured as the main amplier for an audio distribution
system such as for background music, paging, and multi-zone audio or as an amplier for 5.1 or
7.2 home theater surround sound systems.
OSD Audio | Brea, CA | osdaudio.com
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