Specification Sheet

4
Energy-Efficient, Multi-Function 240-Watt Mixing Amplifier with Dual 70/100 V and 4 Ohms Outputs
MA6480A
Theampliershallbeofrack-mountabledesignusingtwomonotransformerlessClassDpoweramplierswithswitch-mode
powersupplies,onelow-Zandonehigh-Z(70/100V)fordistributedspeakersystems.
Front-panel controls and indicatorsshallincludethefollowing:
• Powerbutton(latching)turnstheunitonando
• MasterLevelknobsetsoutputleveltopoweramps
• Indicatorringshowspower(yellow)andclipping(ashingred)
• MasterlevelLEDmetersindicatelevelofmainoutputtoamps
• Inputlevelknobssetthelevelofinputs1and2
• 3-bandfully-parametricEQ
Rear-panel controls and indicatorsshallinclude:
• Balancescrewpotadjuststherelativeoutputofthetwoamps
• High-Zmodeswitchsetshigh-Zampto70or100V
• Channelinputswitchesselectstheinputforchannels1and2,eitherlinelevel,miclevel,ormicwithphantompower
• Prioritymodeswitchonchannel1selectsbetweenalwayson,voice-activated,orcontrol-pinactivated
Connectionstotheampliershallinclude:
• Mic/LineinputsontwoXLR/TRS(-inch)combinationjacks,one3-pinEuroblockconnector,andone4-pinEuroblock
connectorwithcontrolpin
• Outputforbothhigh-andlow-Zona4-pinEuroblockconnector
• Remotecontrolinputon5-pinEuroblockconnector
• ACpoweronIECreceptacle
ProtectionsincorporatedintotheampliershallincludeautomaticlimitingandindependentDCandthermal
overloadprotection.
Performance criteriametbytheampliershallinclude:
• RMSpoweroutput(1kHz@1%THD)of240Wforbothlow-Z(4Ω)andhigh-Z(100/70V)ampliers
• FrequencyResponseof50Hz-50kHz(±2dB)
• Distortion(THD,1kHz)of0.5%atratedoutput
• Dynamicrangeofgreaterthan80dBforallinputs
Architect’s and Engineer’s Specications