QUEST QX4280 เพาเวอร์แอมป์ลายน์ 70V/100V 4 ชาแนล 280 วัตต์ QX4280 Powered Amplifier จากแบรนด์ QUEST
QUEST QX4280
QX-Series Corporate Power
The QX-280 range consists of three, separate 280 Watt per channel models, available as single, two channel, and four channel variants.
Audio quality is studio class in both high and low impedance operation. High quality class D amplifier technology makes it possible to have a compact single rack format with the right combination of power and channel density.
The transformerless outputs deliver full range audio to all impedance loads from 4Ω to 70/100V systems. Each amplifier channel has a selectable 80 Hz high-pass filter (selectable via a swith located on the rear panel), and a volume control for each channel that can be accessed directly from the front panel. Each amplifier channel is also provided with a thermally controlled cooling fan.
คุณสมบัติ
- High Efficiency Class-D Amplifier(s)
- 70/100V or Low Impedance Operation
- Compact 1RU Chassis
- Auto-Sleep Function
- Selectable 80Hz High Pass Filter
- Built-In Limiter Circuit
- Thermally Controlled Fans
- AC power range 85-265VAC 50/60Hz.
- ErP (1275/2008/EC) compliant standby consumption < 0.5W (*per channel)
- Available in 1, 2 or 4 Channel Models
สเปค
| Peak Output Current | 25A | ||
| THD+N (1kHz @ 1W / 1kHz ½ Rated Power) | 0.022% / 0.015% | ||
| Dynamic Range | 119dBA | ||
| Output Resistance (1kHz) | 43.6mΩ | ||
| Peak Output Voltage (unloaded) | ±140V | ||
| Power Output | 4Ω | 280W | |
| 8Ω | 245W | ||
| 70V | 250W | ||
| 100V | 240W | ||
| DC Offset | ±7mV | ||
| Frequency Response | ±0.1dB 20Hz – 20kHz (1st order 22kHz LPF) | ||
| Voltage Gain (@ 1kHz) | 32dB | ||
|
Mechanical Specifications |
|
| Net Weight | QX4280 – 5.7 kg |
| Gross Weight | QX4280 – 8.3 kg |
| Dimensions(H x W x D) | 44 x 485 x 304mm |
| Input Connections | 3-Way 5.08mm Captive Screw Connector |
| Output Connections | 2-Way 5.08mm Locking Captive Screw Connector |
| Mains Power Connection | IEC C14 |
| Mains Input Voltage | 85 – 265VAC |
