Amplifier
SPECIFICATION
* Compact size - up to 2400 watts in 2 rack spaces
* Professional quality performance - incorporates road-proven QSC designs
* High-current toroidal transformers for greater two-ohm power and low noise
* ndependent user-defeatable clip limiters reduce distortion
* Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
* Balanced 1/4" (6.3mm) TRS, XLR and barrier strip inputs
* Binding post and Neutrik Speakon outputs
* Front mounted gain controls for easy access
* Signal and Clip LED indicators to monitor performance
* Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
* Professional quality performance - incorporates road-proven QSC designs
* High-current toroidal transformers for greater two-ohm power and low noise
* ndependent user-defeatable clip limiters reduce distortion
* Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
* Balanced 1/4" (6.3mm) TRS, XLR and barrier strip inputs
* Binding post and Neutrik Speakon outputs
* Front mounted gain controls for easy access
* Signal and Clip LED indicators to monitor performance
* Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
| SPECIFICATIONS | HD4050 |
|---|---|
| STEREO MODE (Both Channels Driven) |
|
| 8 ohms FTC 20 Hz - 20 kHz, 0.1% THD EIA 1 kHz, 0.1% THD |
800 W 850 W |
| 4 ohms FTC 20 Hz - 20 kHz, 0.1% THD EIA 1 kHz, 0.1% THD |
1300 W 1400 W |
| 2 ohms EIA 1 kHz, 1% THD |
2000 W |
| BRIDGE MONO MODE | |
| 8 ohms FTC 20 Hz - 20 kHz, 0.1% THD EIA 1 kHz, 0.1% THD |
2600 W 2800 W |
| 4 ohms EIA 1 kHz, 0.1% THD |
4000 W |
| Signal to Noise, 20 Hz-20 kHz | 100 dB |
| Distortion (SMPTE-IM) | Less than 0.02% |
| Input Sensitivity @ 8 ohms | 1.23V (+4.0 dBu) |
| Voltage Gain | 50x (34 dB) |
| Output Circuitry | Class H |
| Power Requirements 1/8 power pink noise at 4 ohms |
12A |
| Distortion (Typical) 20 Hz - 20 kHz: 10 dB below rated power 1.0 kHz and below: full rated power |
Less than 0.03% THD, 4 and 8 ohms Less than 0.03% THD, 4 and 8 ohms |
| Frequency Response | 20 Hz-20 kHz, ±1 dB -3 dB points: 5 Hz - 50 kHz |
| Damping Factor, 1 kHz and below | Greater than 300 at 8 ohms |
| Input Impedance | 10k ohms unbalanced, 20k ohms balanced |
| Input Clipping | 10 Vrms (+22 dB) |
| Cooling | Continuously variable-speed fan, rear-to-front air flow |
| Connectors, each channel | Input: Active balanced; barrier strip, XLR and 1/4" (6.3mm) TRS tip and XLR (pin 2 positive) Output: touch-proof binding posts and Neutrik® Speakon® |
| Controls | Front: AC switch, Ch. 1 and Ch. 2 gain knobs Rear: 10-position DIP switch |
| Indicators | Power-On: Green LED Signal: Yellow LED (1 per channel) Clip: Red LED (1 per channel) |
| Amplifier Protection | Stable into reactive or mismatched loads |
| Load Protection | On/off muting, AC coupling (850, 1450), triac crowbar (1850HD, 2450, on each channel) |
| Power Requirements | 100, 120, 230 VAC, 50-60 Hz |
| Dimensions | 19" (48.3 cm) rack mounting, 5.25" (13.3 cm) tall (3 RU), 15.9" (40 cm) deep |
| Weight | 68 lbs (30.84 kg) net |
