User manual QSC AUDIO USA 1300

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[. . . ] Add contemporary styling, multiple input/output options, light weight, and advanced protection circuitry, and the GX Series clearly represents real value ­ something everyone can use. GX amplifiers deliver just the right amount of power to the most popular speakers used by entertainers. [. . . ] Typically, loudspeaker manufacturers recommend an amplifier with power output equal to the speaker's "Program (Music) Power" rating or two times (2 x) the "Continuous (RMS) Power" rating. The GX3 is ideal for speakers in the 300 watt (Program) range, while the GX5 provides full performance for 500 watt (Program) speakers. Owners of popular 4 ohm loudspeakers (such as dual-woofer, two-way models) will find the 700 watt (4 ohm) power of the GX5 an ideal match while the USA 1300 1000 watts will very capably power many of today's popular subwoofers or two typical 8 ohm speakers per channel. Technical Notes The GX3 uses the latest evolution of the QSC Grounded Collector output system, for optimum cooling of the critical power transistors. A true Class B biasing system combines maximum thermal efficiency with excellent audio performance. The GX5 uses a Class H system, based on key elements of the PL Series, (PLX, PL3, CX, DCA) almost doubling power in the same size and weight. Subwoofer/Satellite Crossover A subwoofer reduces strain on the full-range speaker, allowing it to play louder, or letting a smaller speaker do the same job. The GX Series supports this mode with a Crossover switch that splits the full-range input entering Ch 1, sending 20 Hz -100 Hz to the sub (Ch 1) and 100 Hz - 20 kHz to the top box (Ch 2). The front panel gain controls balance the sub and top box, while GuardRail optimizes peak power into the sub and top individually, for greater musical impact and dynamic range. GuardRail optimizes peak power into the sub and top individually, for greater musical impact and dynamic range. Features · Power levels matched to the most popular speakers used by entertainers · Optimized for maximum real-world headroom into 4 and 8 speaker systems · Inputs: XLR, 1/4" TRS and phono input connectors for compatibility with any source · Outputs: Speakon® combo accepts, 1/4" (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems · Minimum depth chassis (10. 1"/257 mm) fits in compact, inexpensive effects racks · Lightweight ­ GX3 and GX5 less than 26 lbs (12. 5 kg). USA 1300 only 15. 5 lbs (7 kg)* · Detented gain controls for precise setting and matching of sensitivity · GuardRailTM automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show · Front panel LEDs monitor Power, Signal and Clipping · Subwoofer/Satellite crossover built-in * 230V 16. 5 lbs (7. 5 kg) Choose the right GX amp for your speakers Model GX3 GX5 USA 1300 For 8 speakers: 250 W ­ 350 W (program)a For 8 speakers: 400 W ­ 600 W (program)b For 8 speakers: 650 W ­ 800 W (program)c a) For 4 speakers: 350 W ­ 500 W (program) b) For 4 speakers: 550 W ­ 900 W (program) c) For 4 speakers: 900 W ­ 1250 W (program) GX Series GX3 Stereo Mode 8 / both channels driven / 1 kHz* 8 / single channel driven / 1 kHz* 4 / both channels driven / 1 kHz* 4 / single channel driven / 1 kHz* Distortion (typical) 1 kHz: 1 dB below rated power Signal to Noise (20 Hz ­ 20 kHz) Input Sensitivity Voltage Gain (8) Output Circuitry Power Requirements (1/8 power, pink noise at 4, 120 V) Frequency Response Dynamic Headroom (4) Damping Factor Input Impedance () Maximum Input Level Input Connectors (each channel) Output Connectors (each channel) Amplifier and Load Protection Front Panel Controls and Indicators 300 W 350 W 425 W 500 W GX5 500 W 600 W 700 W 850 W USA 1300 Preliminary Specifications USA 1300 (230V Only) 725 W 800 W 1000 W 1200 W 8: less than 0. 02% / 4: less than 0. 05% 100 dB 1. 2 Vrms 32. 2 dB Class B 6. 3 A 20 Hz ­ 20 kHz, +0, 1 dB 2 dB 100 Greater than 20k (balanced) +24 dB (16 Vrms) 3-pin XLR and 1/4" TRS, balanced, parallel Phono, unbalanced Speakon®, 1/4", Binding Posts Short circuit, open circuit, thermal, RF protection Load protected against DC faults Gain controls, 21 detents Red Clip LEDs, proportional, 0. 1% THD threshold Green Signal LEDs, threshold -35 dB Blue Power LED, AC on Full Range / Crossover switch 100 Hz, 3rd order LP (sub), 2nd order HP (top) 3. 5" (2 RU) x 19" x 10. 1" (89 mm x 483 mm x 257 mm) 27 lb (12. 1 kg) 31 lb (14. 1 kg) 28 lb (12. 6 kg) 32 lb (14. 6 kg) 15. 5 lbs (7 kg) 20. 5 (9. 3 kg) 16. 5 lbs (7. 5 kg) 21. 5 (9. 75 kg) 34. 4 dB 2-tier Class H 6A 36. 1 dB 2-tier Class H 10. 1 A Rear Panel Controls Dimensions (HWD) Weight - Net Weight - Shipping Agency Approvals * At onset of clipping UL, CE, RoHS/WEEE compliant Inputs XLR, 1/4" TRS and phono input connectors for compatibility with any source Crossover Subwoofer/Satellite crossover built-in Speakon® Outputs to Speakers combo output connector accepts 1/4" or Speakon 2 wire connectors Binding post output for compatibility with any loudspeaker wiring scheme All specifications are subject to change without notice. ©2010 QSC Audio Products, LLC. [. . . ] Binding posts support all other speaker wiring systems · Minimum depth chassis (10. 1"/257 mm) fits in compact, inexpensive effects racks · Lightweight ­ GX3 and GX5 less than 26 lbs (12. 5 kg). USA 1300 only 15. 5 lbs (7 kg)* · Detented gain controls for precise setting and matching of sensitivity · GuardRailTM automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show · Front panel LEDs monitor Power, Signal and Clipping · Subwoofer/Satellite crossover built-in * 230V 16. 5 lbs (7. 5 kg) Choose the right GX amp for your speakers Model GX3 GX5 USA 1300 For 8 speakers: 250 W ­ 350 W (program)a For 8 speakers: 400 W ­ 600 W (program)b For 8 speakers: 650 W ­ 800 W (program)c a) For 4 speakers: 350 W ­ 500 W (program) b) For 4 speakers: 550 W ­ 900 W (program) c) For 4 speakers: 900 W ­ 1250 W (program) GX Series GX3 Stereo Mode 8 / both channels driven / 1 kHz* 8 / single channel driven / 1 kHz* 4 / both channels driven / 1 kHz* 4 / single channel driven / 1 kHz* Distortion (typical) 1 kHz: 1 dB below rated power Signal to Noise (20 Hz ­ 20 kHz) Input Sensitivity Voltage Gain (8) Output Circuitry Power Requirements (1/8 power, pink noise at 4, 120 V) Frequency Response Dynamic Headroom (4) Damping Factor Input Impedance () Maximum Input Level Input Connectors (each channel) Output Connectors (each channel) Amplifier and Load Protection Front Panel Controls and Indicators 300 W 350 W 425 W 500 W GX5 500 W 600 W 700 W 850 W USA 1300 Preliminary Specifications USA 1300 (230V Only) 725 W 800 W 1000 W 1200 W 8: less than 0. 02% / 4: less than 0. 05% 100 dB 1. 2 Vrms 32. 2 dB Class B 6. 3 A 20 Hz ­ 20 kHz, +0, 1 dB 2 dB 100 Greater than 20k (balanced) +24 dB (16 Vrms) 3-pin XLR and 1/4" TRS, balanced, parallel Phono, unbalanced Speakon®, 1/4", Binding Posts Short circuit, open circuit, thermal, RF protection Load protected against DC faults Gain controls, 21 detents Red Clip LEDs, proportional, 0. 1% THD threshold Green Signal LEDs, threshold -35 dB Blue Power LED, AC on Full Range / Crossover switch 100 Hz, 3rd order LP (sub), 2nd order HP (top) 3. 5" (2 RU) x 19" x 10. 1" (89 mm x 483 mm x 257 mm) 27 lb (12. 1 kg) 31 lb (14. 1 kg) 28 lb (12. 6 kg) 32 lb (14. 6 kg) 15. 5 lbs (7 kg) 20. 5 (9. 3 kg) 16. 5 lbs (7. 5 kg) 21. 5 (9. 75 kg) 34. 4 dB 2-tier Class H 6A 36. 1 dB 2-tier Class H 10. 1 A Rear Panel Controls Dimensions (HWD) Weight - Net Weight - Shipping Agency Approvals * At onset of clipping UL, CE, RoHS/WEEE compliant Inputs XLR, 1/4" TRS and phono input connectors for compatibility with any source Crossover Subwoofer/Satellite crossover built-in Speakon® Outputs to Speakers combo output connector accepts 1/4" or Speakon 2 wire connectors Binding post output for compatibility with any loudspeaker wiring scheme All specifications are subject to change without notice. ©2010 QSC Audio Products, LLC. 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