ราคาพิเศษ สอบถามโทร 080-6144774 ,02-9810944

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