QSC ISA 1350 Specifications

Features

• Fourmodelsforlow-impedanceapplications

• ISA1350drives70voltlinesdirectlywith1500wattsperchannel

• Three“Ti”versionsincludelow-impedanceandisolated25,70,and100volt

outputsfordistributedaudiosystems

• ISA450andISA750:THX™approvedforprofessionalcinemaapplications

• Rearpanelgaincontrolsfortamperresistantoperationwith2dBdetentsforquick

andrepeatablesettings

• XLRanddetachableEuro-styleinputconnectors

• DataPortV2forusewithDPV2compatiblesignalprocessingaccessories

(XC-3,SF-3,LF-3)andDSP-3/DSP-4(withexternalpowersupply)

• Independentdefeatablecliplimitersforreduceddistortion

• Selectablehigh-passfiltersprotectspeakersandpreventspeakertransformer

saturationwithminimaleffectonprogrammaterial(30Hzor70Hzonnon-”Ti”

models,50Hzor75Hzon“Ti”models)

• ClassHcomplementarybipolaroutputcircuitryreducesACpowerdrawandwaste

heatby40%onISA750andISA800Ti,andby50%onISA1350

• Frontpanelindicatorsincludepower,signal,andclip(andprotectonISA1350)

• Coveredbarrierstripoutputconnectorsforsafetyagencycompliance

• Automaticvariable-speedfanforquietnormaloperationwithmaximumcooling

ondemand

• Rear-to-frontairflowkeepsequipmentrackscool

• Stereo,bridge,orparalleloperatingmodes

• ComprehensiveprotectioncircuitryincludingDC,infrasonic,thermaloverload,and

shortcircuitprotection

• 3-yearwarrantyplusoptional3-yearextendedservicecontract

“Ti” Models

• Isolated25,70,100volt,andlow-impedanceoutputsavailablesimultaneously

• Simplebarrierstripconnectiondeterminesoutputmode

• “Ti”modelshavefullyisolated25,70,and100voltoutputs

The  ISA  Installed  System  Amplifiers  are  designed 

to  meet  the  needs  of  sound  system  designers 

and  contractors  worldwide.  Three  models  feature 

isolated 25, 70, and 100 volt outputs for distributed 

sound systems, while four low-impedance models 

are rated for 2 ohm operation. The  ISA 1350 drives 

70 volt lines directly with 1500 watts per channel. 

Versatile  loading  options  and  a  comprehensive 

set  of  features  make  the  ISA  Series  a  rugged, 

cost-effective  power  solution  for  any  permanently 

installed sound system.

ISA Series

ISA Power Amplifiers

               Watts per channel 

Model 

70V* 

8Ω** 

4Ω** 

2Ω

†

ISA280 

– 

185 

280 

430

ISA450 

– 

260 

425 

700

ISA750 

– 

450 

650 

1200

ISA1350 

1500

††

800 

1300 

2000

ISA300Ti 

300 

185 

280 

430

ISA500Ti 

500 

260 

425 

700

ISA800Ti 

800 

450 

650 

1200

* 50 Hz – 16 kHz, 0.5% THD       

** 20 Hz – 20 kHz, 0.1% THD       

†1 kHz, 1% THD  

†† Direct Output, 70V, less than 0.5% THD, 20 – 20 kHz

ProfessionalPowerAmplifiers

ISA280 | ISA450 | ISA750 | ISA1350 | ISA300Ti | ISA500Ti | ISA800Ti