User manual QSC AUDIO ISA750 DATASHEET

[. . . ] ProfessionalPowerAmplifiers ISA280 | ISA450 | ISA750 | ISA1350 | ISA300Ti | ISA500Ti | ISA800Ti ISA Series The ISA Installed System Amplifiers are designed to meet the needs of sound system designers and contractors worldwide. [. . . ] 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. Features · Fourmodelsforlow-impedanceapplications · SA1350drives70voltlinesdirectlywith1500wattsperchannel I · hree"Ti"versionsincludelow-impedanceandisolated25, 70, and100volt T outputsfordistributedaudiosystems · SA450andISA750:THXTMapprovedforprofessionalcinemaapplications I · earpanelgaincontrolsfortamperresistantoperationwith2dBdetentsforquick R andrepeatablesettings · XLRanddetachableEuro-styleinputconnectors · ataPortV2forusewithDPV2compatiblesignalprocessingaccessories D (XC-3, SF-3, LF-3)andDSP-3/DSP-4(withexternalpowersupply) · ndependentdefeatablecliplimitersforreduceddistortion I · electablehigh-passfiltersprotectspeakersandpreventspeakertransformer S saturationwithminimaleffectonprogrammaterial(30Hzor70Hzonnon-"Ti" models, 50Hzor75Hzon"Ti"models) · lassHcomplementarybipolaroutputcircuitryreducesACpowerdrawandwaste C heatby40%onISA750andISA800Ti, andby50%onISA1350 · rontpanelindicatorsincludepower, signal, andclip(andprotectonISA1350) F · overedbarrierstripoutputconnectorsforsafetyagencycompliance C · utomaticvariable-speedfanforquietnormaloperationwithmaximumcooling A ondemand · ear-to-frontairflowkeepsequipmentrackscool R · Stereo, bridge, orparalleloperatingmodes · omprehensiveprotectioncircuitryincludingDC, infrasonic, thermaloverload, and C shortcircuitprotection · -yearwarrantyplusoptional3-yearextendedservicecontract 3 ISA Power Amplifiers Model ISA280 ISA450 ISA750 ISA1350 ISA300Ti ISA500Ti ISA800Ti 70V* ­ ­ ­ 1500 300 500 800 Watts per channel 8** 4** 185 260 450 800 185 260 450 280 425 650 1300 280 425 650 2 430 700 1200 2000 430 700 1200 "Ti" Models · solated25, 70, 100volt, andlow-impedanceoutputsavailablesimultaneously I · Simplebarrierstripconnectiondeterminesoutputmode · "Ti"modelshavefullyisolated25, 70, and100voltoutputs * 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 ISA Series ISA280 Stereo Mode (both channels driven) 8 / 20 Hz ­ 20 kHz / 0. 1% THD 4 / 20 Hz ­ 20 kHz / 0. 1% THD 2 / 1 kHz / 1% THD Direct Ouput, Stereo Mode 70V / 20 Hz ­ 20 kHz / +0, -0. 3 dB / 0. 5% THD XF Output Power, Stereo Mode 70V or 100V / 50 Hz ­ 16 kHz / 0. 5% THD 25V / 50 Hz ­ 16 kHz / 0. 5% THD Bridge-Mono Mode 8 / 1 kHz / 0. 1% THD 4 / 1 kHz / 1% THD XF Output Power, Bridge Mono Mode 140V or 200V / 50Hz ­ 16 kHz / 0. 5% THD Signal to Noise (20 Hz ­ 20 kHz) Distortion (SMPTE-IM) Input Sensitivity at 8 Gain at 8 Output Circuitry Distortion (typical) 20 Hz ­ 20 kHz: 10 dB below rated power 1. 0 kHz and below: full rated power < 0. 03% THD / 4 and 8 < 0. 03% THD / 4 and 8 ISA300Ti, ISA500Ti, ISA800Ti Direct outputs: -3 dB at 50 Hz, -0. 5 dB at 20 kHz Damping Factor (direct outputs) Output Regulation (isolated outputs) Input Impedance Input Clipping Cooling Connectors Controls Indicators Amplifier Protection Load Protection > 200 at 8 / ISA1350: > 250 < 1. 5 dB 10k ohms unbalanced, 20k ohms balanced 10 Vrms (+22 dBu) / ISA1350: 4. 53 Vrms (+15. 3 dBu) Continuously variable speed fan, back-to-front air flow Input: Active balanced, 3-pin Euro-style detachable terminal block and XLR (pin 2+) Output: Covered barrier strips, DataPort V2 / HD-15 connector Front: AC switch Rear: Ch. 1 & 2 gain knobs / 10-position DIP switch 600 W 830 W - 100 dB < 0. 01% 33. 4x (30. 5 dB) Class AB 900 W 1400 W - 100 dB < 0. 01% 44. 7x (33 dB) Class AB 1500 W 2400 W - 100 dB < 0. 02% 56. 2x (35 dB) 2-tier Class H - - - - - - - - 2800 W 4000 W - 100 dB < 0. 01% 64. 0x (36. 1 dB) 3-tier Class H 300 W 200 W 600 W 830 W 600 W 100 dB < 0. 01% 33. 4x (30. 5 dB) Class AB 500 W 300 W 900 W 1400 W 1000 W 100 dB < 0. 01% - - - 1500 W - - 185 W 280 W 430 W 260 W 425 W 700 W ISA450 ISA750 450 W 650 W 1200 W ISA1350 800 W 1300 W 2000 W ISA300Ti 185 W 280 W 430 W Continuous average output power per channel 260 W 425 W 700 W Specifications ISA500Ti ISA800Ti 450 W 650 W 1200 W - 800 W 500 W 1500 W 2400 W 1600 W 100 dB < 0. 02% 56. 2x (35 dB) 2-tier Class H Continuous average output power 1. 15V (+3. 4 dBU) 1. 07V (+2. 8 dBU) 1. 07V (+2. 8 dBU) 1. 24V (+4. 1 dBU) 1. 15V (+3. 4 dBU) 1. 07V (+2. 8 dBU) 1. 07V (+2. 8 dBU) 44. 7x (33 dB) Class AB Frequency Response (10 dB below rated ouput power) ISA280, ISA450, ISA750 and ISA1350: 20 Hz ­ 20 kHz, +0/-1 dB | -3 dB points, 5 Hz and 50 kHz XF outputs: 50 Hz ­ 16 kHz, +0/-3 dB Power-On: Green LED | Signal: Green LED (1 per channel) | Protect: Red LED (ISA 1350) | Clip: Red LED (1 per channel) Full short circuit, open circuit, thermal, ultrasonic, and RF protection. Stable into reactive or mismatched loads On/off muting Triac crowbar: ISA750, ISA1350 and ISA800Ti AC coupling: ISA280, ISA300Ti, ISA450, ISA500Ti Dimensions (HWD) Weight Net Shipping Power Requirements 5. 25" (13. 3 cm) 3 RU x 19" (48. 3 cm) rack mounting x 15. 9" (40 cm) deep from front mounting rails 36 lb (16. 3 kg) 42 lb (19. 1 kg) 42 lb (19 kg) 48 lb (22 kg) 47 lb (21. 3 kg) 53 lb (24. 0 kg) 68 lb (30. 8 kg) 77 lb (34. 4 kg) 44 lb (20. 0 kg) 50 lb (22. 7 kg) 49 lb (22. 3 kg) 55 lb (25 kg) 57 lb (26 kg) 63 lb (28. 6 kg) 100, 120, 230 VAC, 50 ­ 60 Hz Specifications subject to change without notice. QSC and the QSC logo are registered trademarks of QSC Audio Products, LLC in the U. S. Patent and Trademark office and other countries. [. . . ] Patents may apply or be pending. 1675 MacArthur Boulevard · Costa Mesa, CA 92626 · Ph: 800/854-4079 or 714/957-7100 · Fax: 714/754-6174 ISA Series Spec Sheet - 06/05/08 qscaudio. com [. . . ]