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4 Channel Feather Weight Revolution
Description
Efficient multi-channel powerhouse—the CELTO SLQ4800 delivers 4× 950W 8Ω / 4x 1200W 4Ω / 4x 1200W 2Ω in an ultra-light 4.5kg 1U package with unmatched sound quality. Perfect entry into high-density amplification for portable rigs and fixed installs needing serious drive without the bulk. TrueSound Class D topology with >50 V/µs slew rate and >2500 damping factor offers pristine control. Studio-grade preamp with MUSE® capacitors and transparent J-FET limiters preserve every nuance. The exclusive Virtual Class-A circuit reaches warmth and precision audiophile tonality. LLC resonant PULSAR SMPS with active PFC ensures stable operation worldwide (90–260 VAC). REAN connectors and comprehensive protection make it road-ready out of the box. Shallow 242 mm depth fits even the tightest racks. The SLQ4800 proves that big power can travel light—and sound incredible doing it.
Key Features
- Benchmark grade performance with 0.01% THD and 110dB SNR
- 4× 950W 8Ω / 4x 1200W 4Ω / 4x 1200W 2Ω (RMS)
- Incredibly light and compact 1U / 4.5kg / 242mm depth
- Runs cool with its 92% efficiency Class D output stage
- Audiophile sound with Virtual Class-A warmth and precision
- Zero-Attack J-FET limiters to eliminate unpleasant clipping
- Active PFC to work seamlessly from 90V to 260V AC
Applications
InstallationSound Architecture
PortableProfessional sound, on demand
Technical specifications
| Channels | 4 |
| RMS Power 8Ω (per ch., EIA 1 kHz 1% THD) | 950W |
| RMS Power 4Ω (per ch.) | 1200W |
| RMS Power 2Ω (per ch.) | 1200W |
| Bridge 8Ω | 2x 2400W |
| Bridge 4Ω | 2x 2400W |
| Frequency Response (-1 dB) | 10 – 25 000 Hz |
| Typical THD | < 0.015 % at 1W / < 0.05 % at half power |
| Signal to Noise Ratio (A-weighted) | 110 dB |
| Crosstalk (1 kHz) | > 75 dB |
| Slew Rate | > 50 V/µs |
| Damping Factor (8Ω) | > 2500 (internal) |
| Voltage Gain | 34 dB (50 times voltage) |
| Input Impedance | 20 kΩ balanced |
| Preamp | Ultra-low noise and distortion circuit with MUSE® Fine Gold capacitors and TrueRMS JFET VCA limiters |
| Output Stage / Class | Proprietary High-Speed High-Current 4th generation discrete Class D (92% efficiency) |
| Power Supply | Switch mode with active PFC (Universal AC input from 90 to 260V) |
| Cooling | Temperature regulated long life brush-less fans, front to back airflow |
| Power Connector | IEC C14 With locking latch |
| Input Connectors | 4x Balanced REAN XLR |
| Output Connectors | 4x SpeakON REAN RLS4MP |
| Dimensions (W×H×D) mm | 482×45×242 (1U) |
| Weight Net | 4.5 kg |
| series shortname | slseries |
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