Description
Crunch CRA Series Monoblock Class D Amplifier
The Crunch CRA Series monoblock amplifier is engineered to deliver strong, efficient bass performance in a compact and versatile design. Built on a Class D platform, it provides high output power while maintaining efficiency, making it ideal for subwoofer applications in a wide range of mobile audio systems.
Power & Performance
With up to 1500 watts of maximum output at 1 ohm, this amplifier is designed to drive subwoofers with authority. It delivers 750 watts at 2 ohms and 375 watts at 4 ohms, offering flexible impedance matching for different system configurations.
A wide frequency response and low total harmonic distortion ensure accurate bass reproduction, while a strong signal-to-noise ratio helps maintain clean output.
Precision Tuning Controls
Fine-tune your system with a variable low-pass crossover ranging from 40Hz to 300Hz and a 12dB/octave slope. The built-in subsonic filter (10Hz–40Hz) helps eliminate unwanted ultra-low frequencies, protecting your subwoofer and improving overall efficiency.
A built-in bass boost (0–12dB) and included wired bass remote allow convenient, real-time adjustment of low-frequency output from anywhere in the vehicle.
Integration & Connectivity
Designed for flexible installation, the amplifier supports both RCA and high-level inputs, making it compatible with a wide variety of source units. The DC signal sense feature enables automatic turn-on when an audio signal is detected, eliminating the need for a remote turn-on wire.
Durable nickel-plated brass terminals and screw-down connectors ensure secure, corrosion-resistant connections for power and speaker wiring.
Protection & Reliability
Built-in LED diagnostic indicators provide visual feedback for overload and speaker short protection, helping safeguard your system. An external 125A fuse adds an additional layer of protection for reliable operation.
Specifications
| Amplifier Class | Class D |
| Channels | 1 (Monoblock) |
| Max Power | 1500W |
| Power @ 1 Ohm | 1 x 1500W |
| Power @ 2 Ohms | 1 x 750W |
| Power @ 4 Ohms | 1 x 375W |
| Frequency Response | 12Hz – 310Hz |
| Signal-to-Noise Ratio | 105.3 dBA |
| Total Harmonic Distortion | < 0.27% |
| Input Sensitivity | 0.2 – 6V |
| Low Pass Crossover | 40Hz – 300Hz (12dB/octave) |
| Subsonic Filter | 10Hz – 40Hz |
| Bass Boost | 0 – 12dB |
| Inputs | RCA & High-Level |
| Power/Ground Terminals | 4 AWG |
| Speaker Terminals | 8 AWG |
| Fusing | External 125A |