เครื่องขยายเสียง ยี่ห้อ QSC รุ่น GX3
คุณสมบัติ:
- Power levels matched to the most popular speakers used by entertainers
- Optimized for maximum real-world headroom into 4- and 8-ohm speaker systems
- Inputs: XLR, 1/4-inch TRS and phono input connectors for compatibility with any source
- Outputs: Speakon® combo accepts 1/4-inch (TS) plugs or Speakon 2- and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems
- Minimum depth chassis (10.1-inch / 257 mm) fits in compact, inexpensive effects racks
- Lightweight – GX3 and GX5 less than 26 lb (12.5 kg). GX7 only 15.5 lb (7 kg)*
- Detented gain controls for precise setting and matching of sensitivity
- GuardRail™ 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
| SPECIFICATIONS | GX3 | GX5 | GX7 | |||
| Output power per channel | ||||||
| 8Ω continous, both channels driven | 300 W | 500 W | 725 W | |||
| 4Ω continous, both channels driven | 425 W | 700 W | 1000 W | |||
| Distortion (1 dB below rated power, 1 kHz) | 8 ohms: less than 0.02% 4 ohms: less than 0.05% |
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| Signal to Noise (20 Hz – 20 kHz) | 100 dB | |||||
| Input Sensitivity | 1.2 V rms | |||||
| Voltage Gain | 32.2 dB | 34.4 dB | 36.1 dB | |||
| Output Circuitry | Class B | 2-tier Class H | 2-tier Class H | |||
| Power Requirements (1/8 power, pink noise at 4 ohms, 120V) | 6.3 A | 6 A | 10.1 A | |||
| Frequency Response | 20 Hz–20 kHz, +0, -1 dB | |||||
| Dynamic Headroom (4 ohms) | 2 dB | |||||
| Input Impedance | Greater than 20 kΩ (balanced) | |||||
| Maximum Input Level | +24 dBu (16 V rms) | |||||
| Input Connectors (each channel) | 3-pin XLR and 1/4-inch TRS, balanced, parallel Phono, unbalanced |
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| Output Connectors (each channel) | Speakon®, 1/4-inch, Binding posts | |||||
| Amplifier and Load Protection | Short circuit, open circuit, thermal, RF protection Load protected against DC faults |
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| Front Panel Controls and Indicators | Gain controls, 21 detents Red CLIP LEDs, proportional, 0.1% THD threshold Green SIGNAL LEDs, threshold 35 dB below clipping Blue POWER LED, AC on |
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| Rear Panel Controls | Full Range / Crossover switch 100 Hz, 3rd order LP (sub), 2nd order HP (top) |
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| Product Dimensions (H×W×D) | 89 × 483 × 257 mm 3.5 × 19 × 10.1 in |
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| Carton Dimensions (H×W×D) | 610 × 380 × 153 mm 24 × 15 × 6 in |
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| Net Weight | 12.1 kg / 27 lb | 12.6 kg / 28 lb | 120V model: 7 kg / 15.5 lb 230V model: 7.5 kg / 16.5 lb |
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| Shipping Weight | 13.2 kg / 29.1 lb | 14.5 kg / 32 lb | 120V model: 9.3 kg / 20.5 lb 230V model: 9.75 kg / 21.5 lb |
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| Agency Approvals | UL, CE, RoHS/WEEE Compliant | |||||
| AC Current and Heating, 120 VAC (multiply current by 0.5 for 230 VAC) |
GX3 | GX5 | GX7 | |||
| Operating Condition | AC amps | BTU/hour | AC amps | BTU/hour | AC amps | BTU/hour |
| Idle | 0.2 | 44 | 0.3 | 60 | 0.6 | 82 |
| 8 + 8 ohms, 1/8 power 1 | 4.1 | 904 | 3.3 | 734 | 6.7 | 1169 |
| 8 + 8 ohms, 1/3 power 2 | 6.1 | 1160 | 8.5 | 1456 | 13.3 | 1807 |
| 8 + 8 ohms, full power 3 | 9.75 | 1109 | 16.2 | 1891 | 26.5 | 2167 |
| 4 + 4 ohms, 1/8 power 1 | 6.3 | 1515 | 5.8 | 1160 | 10.1 | 1963 |
| 4 + 4 ohms, 1/3 power 2 | 9.4 | 2105 | 11.2 | 2162 | 18.5 | 2612 |
| 4 + 4 ohms, full power 3 | 15.0 | 2297 | 24.5 | 3754 | 40 | 4478 |
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