Description
Crunch CRA-1500.4 4-Channel Class D Amplifier
The Crunch CRA-1500.4 is a high-efficiency 4-channel amplifier designed to deliver strong, stable output across a variety of system configurations. Built on a Class D platform with a switch mode power supply, this amplifier maintains consistent performance regardless of battery voltage while keeping size and heat under control. Its flexible channel modes make it ideal for powering full-range speakers, subwoofers, or a combination of both.
Performance Highlights
- 1500W maximum output power
- 4-channel operation with multiple configuration modes
- 4 x 375W @ 2 ohms and 4 x 185W @ 4 ohms
- 2 x 750W bridged output @ 4 ohms
- Frequency response: 10Hz – 30kHz
- Total harmonic distortion: < 1.0%
- Signal-to-noise ratio: -76.8dBA
Advanced Engineering
Equipped with proprietary SPEED-FET MOSFET output devices, the CRA-1500.4 maximizes efficiency while maintaining sound clarity and minimizing distortion. The integrated switch mode power supply (SMPS) stabilizes voltage delivery, helping prevent power drops and protecting connected speakers from voltage irregularities.
A low-noise preamplifier circuit preserves signal integrity, while the aluminum heat sink with Quick Thermal Dispersion Technology helps keep operating temperatures under control during extended use.
Tuning & Control
- Variable 12dB per octave electronic crossovers
- High-pass crossover: 40Hz – 400Hz
- Low-pass crossover: 40Hz – 400Hz
- Input sensitivity: 0.2V – 6V
- Selectable operation modes including stereo and bridged configurations
- Onboard electronic equalizer for system tuning
Installation & Connectivity
- RCA and high-level inputs for OEM and aftermarket systems
- Auto turn-on via high-level inputs for simplified installation
- Nickel-plated brass terminals for corrosion resistance and secure connections
- Screw-down connectors for quick and reliable wiring
- 4 AWG power/ground inputs and 8 GA speaker outputs
- External 60A fuse protection
Protection & Diagnostics
Built-in LED system protection circuitry provides visual status feedback for overload and speaker short conditions, helping ensure safe and reliable amplifier operation.
Specifications
| Amplifier Class | Class D |
| Channels | 4 |
| Max Power | 1500W |
| Power @ 2 Ohms | 4 x 375W |
| Power @ 4 Ohms | 4 x 185W |
| Bridged Power @ 4 Ohms | 2 x 750W |
| Frequency Response | 10Hz – 30kHz |
| Signal to Noise Ratio | -76.8dBA |
| Total Harmonic Distortion | < 1.0% |
| High Pass Crossover | 40Hz – 400Hz |
| Low Pass Crossover | 40Hz – 400Hz |
| Input Sensitivity | 0.2V – 6V |
| Inputs | RCA & High-Level |
| Power Terminal | 4 AWG |
| Speaker Wire Gauge | 8 GA |
| Fusing | External 60A |