User manual QSC Audio Stereo Amplifier ISA450

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ISA Series  
Specifications  
ISA280  
ISA450  
ISA750  
ISA1350  
ISA300Ti  
ISA500Ti  
ISA800Ti  
StereoꢀModeꢀ(bothꢀchannelsꢀdriven)ꢀ  
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀContinuousꢀaverageꢀoutputꢀpowerꢀperꢀchannel  
8ꢀ/ꢀ20ꢀHzꢀ-ꢀ20ꢀkHzꢀ/ꢀ0.1%ꢀTHDꢀ  
4ꢀ/ꢀ20ꢀHzꢀ-ꢀ20ꢀkHzꢀ/ꢀ0.1%ꢀTHDꢀ  
2ꢀ/ꢀ1ꢀkHzꢀꢀ/ꢀ1%ꢀTHDꢀ  
185ꢀWꢀ  
280ꢀWꢀ  
430ꢀWꢀ  
260ꢀWꢀ  
425ꢀWꢀ  
700ꢀWꢀ  
450ꢀWꢀ  
650ꢀWꢀ  
1200ꢀWꢀ  
800ꢀWꢀ  
185ꢀWꢀ  
280ꢀWꢀ  
430ꢀWꢀ  
260ꢀWꢀ  
425ꢀWꢀ  
700ꢀWꢀ  
450ꢀW  
650ꢀW  
1200ꢀW  
1300ꢀWꢀꢀ  
2000ꢀWꢀꢀ  
DirectꢀOuput,ꢀStereoꢀMode  
70Vꢀ/ꢀ20ꢀHzꢀ-ꢀ20ꢀkHzꢀ/ꢀ+0,-0.3ꢀdBꢀ/ꢀ0.5%ꢀTHDꢀꢀ −ꢀ  
XFꢀOutputꢀPower,ꢀStereoꢀMode  
−ꢀ  
−ꢀ  
1500ꢀWꢀ  
−ꢀ  
−ꢀ  
70Vꢀorꢀ100Vꢀ/ꢀ50ꢀHzꢀ-ꢀ16ꢀkHzꢀ/ꢀ0.5%ꢀTHDꢀ  
25Vꢀ/ꢀ50ꢀHzꢀ-ꢀ16ꢀkHzꢀ/ꢀ0.5%ꢀTHDꢀ  
−ꢀ  
−ꢀ  
−ꢀ  
−ꢀ  
−ꢀ  
−ꢀ  
−ꢀ  
−ꢀ  
300ꢀWꢀ  
200ꢀWꢀ  
500ꢀWꢀ  
300ꢀWꢀ  
800ꢀW  
500ꢀW  
BridgeꢀMonoꢀModeꢀ  
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀContinuousꢀaverageꢀoutputꢀpower  
8ꢀ/ꢀ1ꢀkHzꢀ/ꢀ0.1%ꢀTHDꢀ  
600ꢀWꢀ  
900ꢀWꢀ  
1500ꢀWꢀ  
2400ꢀWꢀ  
2800ꢀWꢀ  
4000ꢀWꢀꢀ  
600ꢀWꢀ  
830ꢀWꢀ  
900ꢀWꢀ  
1500ꢀW  
2400ꢀW  
4ꢀ/ꢀ1ꢀkHzꢀ/ꢀ1%ꢀTHDꢀ  
830ꢀWꢀ  
1400ꢀWꢀ  
1400ꢀWꢀ  
XFꢀOutputꢀPower,ꢀBridgeꢀMonoꢀModeꢀ  
140Vꢀorꢀ200Vꢀ/ꢀ50Hzꢀ-ꢀ16ꢀkHzꢀ/ꢀ0.5%ꢀTHDꢀ  
−ꢀ  
−ꢀ  
−ꢀ  
−ꢀ  
600ꢀWꢀ  
100ꢀdBꢀ  
<ꢀ0.01%ꢀ  
1000ꢀWꢀ  
100ꢀdBꢀ  
1600ꢀW  
100ꢀdB  
SignalꢀtoꢀNoiseꢀ(20ꢀHzꢀ-ꢀ20ꢀkHz)ꢀ  
Distortionꢀ(SMPTE-IM)ꢀ  
InputꢀSensitivityꢀatꢀ8ꢀ  
Gainꢀatꢀ8ꢀ  
100ꢀdBꢀ  
<ꢀ0.01%ꢀ  
100ꢀdBꢀ  
<ꢀ0.01%ꢀ  
100ꢀdBꢀ  
<ꢀ0.02%ꢀ  
100ꢀdBꢀ  
<ꢀ0.01%ꢀ  
<ꢀ0.01%ꢀꢀ  
<ꢀ0.02%  
1.15Vꢀ(+3.4ꢀdBU)ꢀ 1.07Vꢀ(+2.8ꢀdBU)ꢀ 1.07Vꢀ(+2.8ꢀdBU)ꢀ 1.24Vꢀ(+4.1ꢀdBU)ꢀ 1.15Vꢀ(+3.4ꢀdBU)ꢀꢀ 1.07Vꢀ(+2.8ꢀdBU)ꢀ 1.07Vꢀ(+2.8ꢀdBU)  
33.4xꢀ(30.5ꢀdB)ꢀ 44.7xꢀ(33ꢀdB)ꢀ  
ABꢀ ABꢀ  
56.2xꢀ(35ꢀdB)ꢀ  
ClassꢀH,ꢀ2-tierꢀ  
64.0xꢀ(36.1ꢀdB)ꢀ 33.4xꢀ(30.5ꢀdB)ꢀ 44.7xꢀ(33ꢀdB)ꢀ  
ClassꢀH,ꢀ3-tierꢀ ABꢀ ABꢀ  
56.2xꢀ(35ꢀdB)  
ClassꢀH,ꢀ2-tier  
OutputꢀCircuitryꢀ  
Distortionꢀ(typical)  
20ꢀHzꢀ-ꢀ20ꢀkHz:ꢀ10ꢀdBꢀbelowꢀratedꢀpowerꢀ  
1.0ꢀkHzꢀandꢀbelow:ꢀfullꢀratedꢀpowerꢀ  
<ꢀ0.03%ꢀTHDꢀ/ꢀ4ꢀandꢀ8Ω  
<ꢀ0.03%ꢀTHDꢀ/ꢀ4ꢀandꢀ8Ω  
FrequencyꢀResponseꢀ(10ꢀdBꢀbelowꢀratedꢀouputꢀpower)ꢀISA280,ꢀISA450,ꢀISA750ꢀandꢀISA1350:ꢀ20ꢀHz-20ꢀkHz,ꢀ+0/-1ꢀdBꢀꢀ|ꢀꢀ-3ꢀdBꢀpoints,ꢀ5ꢀHzꢀandꢀ50ꢀkHz  
ISA300Ti,ꢀISA500Ti,ꢀISA800TiꢀꢀDirectꢀoutputs:ꢀ-3ꢀdBꢀatꢀ50ꢀHz,ꢀ-0.5ꢀdBꢀatꢀ20ꢀkHzꢀꢀꢀꢀXFꢀoutputs:ꢀ50ꢀHzꢀ-ꢀ16ꢀkHz,ꢀ+0/-3ꢀdB  
>ꢀ200ꢀatꢀ8ꢀ/ꢀISA1350:ꢀ>ꢀ250  
DampingꢀFactorꢀ(directꢀoutputs)ꢀ  
OutputꢀRegulationꢀ(isolatedꢀoutputs)ꢀꢀ  
InputꢀImpedanceꢀ  
<ꢀ1.5ꢀdB  
10kꢀohmsꢀunbalanced,ꢀ20kꢀohmsꢀbalanced  
InputꢀClippingꢀ  
10ꢀVrmsꢀ(+22ꢀdBu)ꢀ/ꢀISA1350:ꢀ4.53ꢀVrmsꢀ(+15.3ꢀdBu)  
Coolingꢀꢀ  
Continuouslyꢀvariableꢀspeedꢀfan,ꢀback-to-frontꢀairꢀflow  
Connectorsꢀꢀ  
Input:ꢀActiveꢀbalanced,ꢀ3-pinꢀeuroꢀstyleꢀdetachableꢀterminalꢀblockꢀandꢀXLRꢀ(pinꢀ2+)  
Output:ꢀCoveredꢀbarrierꢀstrips,ꢀꢀDataPortꢀV2ꢀ/ꢀHD-15ꢀconnector  
Front:ꢀACꢀswitch  
Controlsꢀ  
Rear:ꢀCh.ꢀ1ꢀ&ꢀ2ꢀgainꢀknobsꢀ/ꢀ10-positionꢀDIPꢀswitch  
Indicatorsꢀ  
Power-On:ꢀGreenꢀLEDꢀꢀ|ꢀꢀSignal:ꢀGreenꢀLEDꢀ(1ꢀperꢀchannel)ꢀꢀ|ꢀꢀProtect:ꢀRedꢀLEDꢀ(ISAꢀ1350)ꢀꢀ|ꢀꢀClip:ꢀRedꢀLEDꢀ(1ꢀperꢀchannel)ꢀ  
Fullꢀshortꢀcircuit,ꢀopenꢀcircuit,ꢀthermal,ꢀultrasonic,ꢀandꢀRFꢀprotection.ꢀStableꢀintoꢀreactiveꢀorꢀmismatchedꢀloads  
On/offꢀmutingꢀ  
AmplifierꢀProtectionꢀ  
LoadꢀProtectionꢀ  
Triacꢀcrowbar:ꢀISA750,ꢀISA1350ꢀandꢀISA800Ti  
ACꢀcoupling:ꢀISA280,ꢀISA300Ti,ꢀISA450,ꢀISA500Ti  
Dimensionsꢀ(HWD)ꢀ  
Weightꢀ  
5.25"ꢀ(13.3ꢀcm)ꢀ3ꢀrackꢀspacesꢀxꢀ19"ꢀ(48.3ꢀcm)ꢀrackꢀmountingꢀxꢀ15.9"ꢀ(40ꢀcm)ꢀdeepꢀfromꢀfrontꢀmountingꢀrails  
Netꢀ  
36ꢀlbsꢀ(16.3ꢀkg)ꢀ 42ꢀlbsꢀ(19ꢀkg)ꢀ  
47ꢀlbsꢀ(21.3ꢀkg)ꢀ 68ꢀlbsꢀ(30.8ꢀkg)ꢀ 44ꢀlbsꢀ(20.0ꢀkg)ꢀ 49ꢀlbsꢀ(22.3ꢀkg)ꢀ 57ꢀlbsꢀ(26ꢀkg)  
Shippingꢀ  
42ꢀlbsꢀ(19.1ꢀkg)ꢀ 48ꢀlbsꢀ(22ꢀkg)ꢀ 53ꢀlbsꢀ(24.0ꢀkg)ꢀ 77ꢀlbsꢀ(34.4ꢀkg)ꢀ 50ꢀlbsꢀ(22.7ꢀkg)ꢀ 55ꢀlbsꢀ(25ꢀkg)ꢀ  
100,ꢀ120,ꢀ230ꢀVAC,ꢀꢀ50ꢀ-ꢀ60ꢀHz  
63ꢀlbsꢀ(28.6ꢀkg)  
PowerꢀRequirementsꢀ  
Specifications subject to change without notice.  
1
675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174  
qscaudio.com  
ISAꢀSeriesꢀSpecꢀSheetꢀ-ꢀ02/22/06  

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