Celto Pro · SL Series
SLQ4000
SKU: SLQ4000
4-channel, ultra-lightweight, and highly efficient 1U Class D power amplifier (4 x 1000W @ 4Ω).
Request a Quote for This Product Request system design Talk to an audio expert · +90 216 469 83 352-year distributor warranty · Original product · Engineering support
Overview
The Celto Pro SLQ4000 is a professional 4-channel power amplifier designed in a compact 1U rack format, weighing only 4.5 kg.
Equipped with a switch-mode power supply featuring active PFC (Power Factor Correction) for universal AC input (90 to 260V), it ensures stable performance under varying mains conditions. Its proprietary 4th generation high-speed, high-current discrete Class D output stage operates at an outstanding 92% efficiency. The preamplifier stage incorporates MUSE® Fine Gold capacitors and TrueRMS JFET VCA limiters to deliver pristine audio quality with ultra-low noise and distortion (< 0.015% THD). Delivering 600W per channel at 8 Ohms, and 1000W at both 4 Ohms and 2 Ohms (bridgeable to 2 x 2000W), the SLQ4000 provides exceptional acoustic control with a high damping factor (>2500). Featuring REAN XLR inputs and SpeakON outputs, it is an ideal solution for both demanding fixed installations and mobile sound reinforcement projects.
Technical Specifications
SLQ4000 · SKU SLQ4000
| ACOUSTIC PERFORMANCE | |
|---|---|
| Frequency Response (-1 dB) | 10 – 25 000 Hz |
| Input Impedance | 20 kΩ balanced |
| POWER OUTPUT | |
| Bridge 8Ω | 2x 2000W |
| Bridge 4Ω | 2x 2000W |
| SIGNAL PROCESSING | |
| Signal to Noise Ratio (A-weighted) | 110 dB |
| Voltage Gain | 34 dB (50 times voltage) |
| Input Connectors | 4x Balanced REAN XLR |
| CONNECTIVITY | |
| Power Connector | IEC C14 With locking latch |
| Output Connectors | 4x SpeakON REAN RLS4MP |
| PHYSICAL | |
| Channels | 4 |
| Dimensions (W×H×D) mm | 482×45×242 (1U) |
| Weight Net | 4.5 kg (9.9 lb) |
| OTHER | |
| RMS Power 8Ω (per ch., EIA 1 kHz 1% THD) | 600W |
| RMS Power 4Ω (per ch.) | 1000W |
| RMS Power 2Ω (per ch.) | 1000W |
| Typical THD | < 0.015 % at 1W / < 0.05 % at half power |
| Crosstalk (1 kHz) | > 75 dB |
| Slew Rate | > 50 V/µs |
| Damping Factor (8Ω) | > 2500 (internal) |
| 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 |
| series shortname | slseries |
SLQ4000 · 2-year distributor warranty · Original product · Engineering support
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Frequently Asked Questions
What is the price of SLQ4000?
Pricing depends on your project configuration. Contact our engineering team to determine the most suitable setup and receive a current quote.
What does the distributor warranty cover?
Every system we install is our direct responsibility for two years against manufacturing defects, with scheduled measurement, calibration and maintenance support.
How is product originality guaranteed?
We import all required parts and products directly from the manufacturer's factory, preserving the authenticity of the system.
How does the design & quote process work?
Let us build the acoustic infrastructure of your project to engineering standards with needs analysis, detailed venue exploration, and accurate technical guidance.
2-year distributor warranty · Original product · Engineering support