รายละเอียดย่อ :
เครื่องขยายเสียง Dual channel amplifier with 400 watts/channel (8ohms.), DSP
รายละเอียดทั้งหมด :
QSC GXD4 เครื่องขยายเสียง Dual channel amplifier with 400 watts/channel
(8ohms.), DSP
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:
- Channel A on 1+, 1-; Channel B on 2+, 2-
- Channel B on 1+, 1-
|
| Amplifier and Load Protection |
Short circuit, open circuit, thermal, RF protection
Load protected against DC faults |
| 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 |
| 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. |
| 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 |
|
