QX Series Amplifier with DSP Processing.
The QX4500 captures all the key elements of Quest Engineering?s advanced amplifier designs and marries it perfectly with on-board 64-bit digital processing to produce an advanced power amplifier/DSP management system suitable for all professional applications.
With an amplifier section boasting 1900 Watts of pure sonic power per channel at 4 Ohms, low standby mains consumption, the QX4500?s rugged construction and stylish design allow it to be a brut of workhorse when it comes to power output, yet the sophistication of its on-board DSP give a depth of control that meets the highest of engineering standards. The integrated DSP also features 10 parametric equalizers (PEQs) on each input and each output. Up to 100 presets can be stored in the DSP for instant recall.
Features:
Key Amplifier Features:
- QX4500: 2 x 1900 W / 3800 W (BTL)
- Extensive protection scheme
- Low standby consumption
Key DSP Feature Set:
- 64-bit digital processing
- 100 presets
- Fully configurable routing of inputs to outputs
- 2 AES and 2 Analogue inputs
- 10 parametric filters per input and output
- Parametric filters: Bell, High Shelf, Low Shelf, Notch, Allpass, Butterworth, Bessel, Linkwitz-Railey filters up to 24dB/oct
- Delay, Limiter, 180? phase change
- Input gain: -48 to + 12dB
Specifications:
| Max. Output Voltage | 140 Vp / 280 Vpp |
| Output Circuitry | Class H |
| Signal To Noise-Ratio (20 Hz - 20 kHz, 8 ? load) | > 105 dB (A-weighted) / > 102 dB (unweighted) |
| THD+N (typical) (20 Hz - 10 kHz, 4 ?, 120 W output) | < 0,02 % |
| Damping Factor (8 ? load, 1 kHz and below) | > 400 |
| Frequency Response (4 ?, 120 W output) | 20 Hz - 20 kHz ? 0.2 dB |
| Input Impedance | 15 k? balanced |
| Input Gain | 32 dB |
| Protection Circuits | inrush-current limitation, protection circuits against transients, temperature, output DC protection, power transistor SOA protection, intelligent mains fuse protection |
| Indicators | LED?s for SIGNAL/PROTECT, CLIP, LCD (character 2 x 16) |
| Net Weight | 9.4 kg / 20.7 lbs |
| Shipping Weight | 11 kg / 24.3 lbs |
| Dimensions (WxHxD) | 483 x 88.1 x 419 mm / 19 x 3.5 x 16.5 inches (19?, 2U) |
| Shipping Dim. (WxHxD) | 600 x 105 x 527 mm / 23.3 x 4.1 x 20.7 inches |
Stereo:
All channels driven @ 1kHz, THD < 1%
| 16 ? | 600 W |
| 8 ? | 1100 W |
| 4 ? | 1900 W |
| 2 ? | 1500 W |
Mono Bridge:
Single channel driven @ 1kHz, THD < 1%
| 16 ? | 2200 W |
| 8 ? | 3800 W |
