Quest QXD-5K Power Amplifier with DSP and Network Capability
The QXD-5K is a high-powered, 2RU, 4 x 1250W Class-D amplifier designed for performance-critical installations. It delivers up to 2500W per channel in bridged mode and supports 70V/100V operation. Built on UMAC™ Class-D architecture, this amplifier offers exceptional dynamic range, ultra-low distortion, and highly efficient power delivery. It includes an integrated 32bit/96kHz DSP for precise signal management, featuring FIR and IIR filters, peak and RMS limiters, and onboard Quest speaker presets.
For control, a high-resolution TFT display and LED-illuminated encoder are available on the front panel. Network control and GPIO are accessible via the RJ45 port, allowing for remote management and integration into broader AV systems.
Key Specifications:
- Channels: 4 x 750W (Low-Z), 2 x 2500W (Bridged), 2 x 1500W (70V/100V)
- DSP: 32bit/96kHz FIR/IIR Filters, Limiters, Speaker Libraries
- Mounting: 2RU Rack
- Control: RJ45 & GPIO, Front TFT Display
- Options: Dante™/AES67 Expansion Card
Product Specifications:
| POWER |
| NORMAL OPERATION (PEAK) |
BRIDGE-STEREO MODE (PEAK) |
| Load |
Total Power |
8 Ω |
4 Ω |
70V |
100V |
8 Ω |
4 Ω |
70V |
100V |
| Maximum Dynamic Power (@1kHz, 1% THD) |
5000 W |
4 x 400 W |
4 x 750 W |
N/A |
N/A |
2 x 1500 W |
2 x 2500 W |
2 x 1200 W |
2 x 1500 W |
| NORMAL OPERATION (RMS) |
BRIDGE-STEREO MODE (RMS) |
| Load |
Total Power |
8 Ω |
4 Ω |
70V |
100V |
8 Ω |
4 Ω |
70V |
100V |
| Maximum Continuous Power (@1kHz, 1% THD) |
5000 W |
4 x 400 W |
4 x 750 W |
N/A |
N/A |
2 x 1500 W |
2 x 2500 W |
2 x 1200 W |
2 x 1500 W |
|
| I/O |
|
OUTPUT CIRCUITRY
|
UMAC™ Class-D – full bandwidth PWM modulator with ultra-low distortion
|
|
OUTPUT CHANNELS
|
Four Speaker Level Output via Neutrik speakON® connectors
|
|
INPUT CHANNELS
|
Four Balanced Line Level Inputs via 3-pin Euroblock/Phoenix connector with 5.08 mm pitch and screw-lock
|
|
DEFAULT GAIN
|
25 dB
|
|
FREQUENCY RESPONSE
|
20 Hz - 20 kHz (+/-0.25 dB), 4 Hz - 40kHz (-3dB)
|
|
TOTAL HARMONIC DISTORTION
|
< 0.008% (1 KHz, 5 W, 8 ohm load)
|
|
DYNAMIC RANGE
|
> 108 dBA
|
|
MAXIMUM INPUT LEVEL
|
+28 dBu
|
|
INPUT IMPEDANCE
|
10kohm Unbalanced, 20kohm Balanced
|
|
LATENCY
|
<350us, flat setup
|
|
| CONTROL |
|
CONTROLS AND INDICATORS (FRONT)
|
High-Resolution TFT Display with Rotary Encoder with LED Halo
|
|
CONTROLS AND INDICATORS (REAR)
|
N/A
|
|
CONTROL AND MONITORING
|
RJ45 & GPIO
|
|
DIGITAL SIGNAL PROCESSING
|
32bit/96kHz with FIR/IIR Filters, Peak and RMS Limiters, Digital Delay & Custom Quest Speaker Libraries
|
|
PROTECTION CIRCUITS
|
Thermal Protection, Over-Current Protection, DC Protection, HF Protection
|
|
| ELECTRICAL |
|
MAINS POWER INPUT
|
Universal Mains, 100-240VAC, 50-60 Hz
|
|
MAINS CONNECTOR
|
Neutrik powerCON®
|
|
POWER CONSUMPTION - STANDBY
|
<0.5W
|
|
POWER CONSUMPTION - IDLE
|
28 W
|
|
POWER CONSUMPTION - 1/8TH POWER / 8 ohm Load
|
260 W
|
|
POWER CONSUMPTION - 1/3RD POWER / 8 ohm Load
|
650 W
|
|
| HEAT |
|
HEAT GENERATED - STANDBY
|
1.7 BTU/hr / 1.7 kJ per hour
|
|
HEAT GENERATED - 1/8TH POWER / 8 ohm Load
|
205 BTU/hr / 214 kJ per hour
|
|
COOLING
|
Fan-Forced Air Cooling – User-Selectable Temperature-Dependent Control Curves
|
|
FAN NOISE
|
36 dB(A) (Anechoic Chamber, @ 1 m)
|
|
| SIZE |
|
RACK SIZE
|
2RU
|
|
DIMENSIONS (W x H x D)
|
482 x 88 x 416mm (19" x 3.5" x 16.4")
|
|
WEIGHT
|
10.2kg (22.5lbs)
|
|
SHIPPING DIMENSIONS (W x H x D)
|
610 x 135 x 550mm (24" x 5.3" x 21.6")
|
|
SHIPPING WEIGHT
|
12kg (26.5lbs)
|
|
| ACCESSORIES |
|
ACCESSORIES (INCLUDED)
|
Mains Cable, Euroblock/Phoenix Plugs, Wi-Fi Antenna
|
|
ACCESSORIES (AVAILABLE SEPARATELY)
|
None
|
|
OPTIONS
|
Dante® Expansion Card (additional 4 inputs, Dante® AoIP, AES67 compatible)
|
|
