เครื่องขยายเสียง ยี่ห้อ QSC รุ่น GXD4
Feature
- High peak output power with up to 1600 watts from the GXD 4 and a whopping 4500 Watts from the GXD 8.
- Power levels matched to the most popular loudspeakers and optimized for maximum real-world headroom into 4Ω and 8Ω speaker systems.
- Class D output stage with a universal power supply for high performance and efficiency.
- Extensive and powerful loudspeaker processing built in. Includes high and low-pass filters, 4-band parameteric EQ, limiting, and delay.
- Large LCD display simplifies amplifier setup and indicates amp status.
- Inputs: Parallel XLR and 1/4” TRS connectors for compatibility with any source while providing convenient loop-thru capability.
- Precision rotary encoders for gain and DSP parameter control.
- Outputs: Professional binding post and NL4 connectors (compatible with NL2) provide for mono and bi-amp speaker connections.
- Digital limiting automatically protects the amplifier from damage due to temperature rise or overdrive.
- Adjustable speaker protection to match your loudspeaker’s power and impedance.
- Front panel LEDs indicate signal presence, input overload, and amplifier clipping.
| SPECIFICATIONS | GXD 4 | GXD 8 | |
|---|---|---|---|
| Stereo Mode, watts per channel | |||
| 8Ω dynamic, both channels driven | 600 watts | 1500 watts | |
| 4Ω dynamic, both channels driven | 800 watts | 2250 watts | |
| 8Ω continuous, both channels driven | 400 watts | 800 watts | |
| 4Ω continuous, both channels driven | 600 watts | 1200 watts | |
| Distortion (typical) 1 kHz at full rated power |
< 1% THD | ||
| Signal to Noise (A weighted, 20 Hz–20 kHz) | 100 dB | ||
| Input Sensitivity | 1.2 Vrms, 3.9 Vrms | ||
| Maximum Voltage Gain | 33.5 dB | 36.5 dB | |
| Output Circuitry | Class D | Class D | |
| Power Requirements: 1/8 power at 4Ω | |||
| – 100 V AC | 3.4 A | 6.2 A | |
| – 120 V AC | 2.9 A | 5.6 A | |
| – 230 V AC | 1.6 A | 3.2 A | |
| Frequency Response (20 Hz–20 kHz) | +0.7 dB, -0.8 dB | ||
| Dynamic Headroom (4Ω) | 1.25 dB | 2.73 dB | |
| Damping Factor (8Ω) | 100 | ||
| Input Impedance | 20 kΩ (balanced), 10 kΩ (unbalanced) | ||
| Maximum Input Level | +23.5 dBu | ||
| Input Connectors (each channel) | 3-pin XLR/F / 1/4″ TRS, balanced | ||
| Output Connectors (each channel) | NL4, binding posts NL4 pinout:
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| 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 | 2 × Rotary Encoders 3 × Operational buttons (HOME, ENTER, EXIT) 2 × Green Signal LEDs indicate signal presence 2 × Red A/D Clip LEDs indicate input over-drive and/or amplifier current clipping Blue Power LED ring indicates AC on 2.12″ × 1.0″, 256 × 128 pixel LCD |
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| DSP Functions | High-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 20 Hz to 4 kHz Low-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 60 Hz to 4 kHz 4-band parametric EQ with variable frequency, gain, and bandwidth Peak limiter with power, agressiveness, and impedance selection Delay 50 msec max. |
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| Dimensions (HWD) | 3.5″ (2 RU) × 19″ × 10.2″ (89 mm × 483 mm × 259 mm) | ||
| Weight (Net) | 11.3 lb (5.1 kg) | 13.2 lb (6.0 kg) | |
| Weight – Shipping | 15.4 lb (7.0 kg) | 17.3 lb (7.8 kg) | |
| Agency Approvals | UL, CE, RoHS/WEEE compliant | ||
| Carton and Contents | Power cable and quick start guide | ||
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