Crunch CRA-1000.2 2-Channel Class D Car Amplifier

The Crunch CRA-1000.2 is a compact two-channel car audio amplifier for adding external power to a vehicle sound system. It can be used to drive a pair of speakers in stereo or a compatible speaker load in bridged mono. Its high-level and RCA input options support use with many aftermarket and factory-style source-unit installations.

This amplifier is intended for listeners building a system around upgraded full-range speakers, component speakers, or a bridged subwoofer application. It provides 250 watts per channel at 4 ohms, 500 watts per channel at 2 ohms, or 1,000 watts bridged at 4 ohms. Adjustable high-pass and low-pass crossovers help direct the appropriate frequency range to the connected speakers.

The CRA-1000.2 uses a Class D amplifier topology designed for efficient operation in a compact chassis. Crunch specifies a switch-mode power supply and SPEED-FET MOSFET output-device technology. A low-noise preamplifier circuit is used to help keep the incoming source signal clean through amplification.

System tuning is handled through fully adjustable 12 dB-per-octave crossover controls. Both the high-pass and low-pass ranges are adjustable from 40 Hz to 400 Hz, allowing the amplifier to be configured for full-range speakers or a low-frequency application. The input sensitivity range is specified at 0.2 to 6 volts.

For an upgrade path, the amplifier offers RCA inputs for aftermarket signal sources and high-level inputs for systems without RCA outputs. Signal-sensing remote turn-on can simplify integration with compatible factory audio systems. An output connection can also provide signal to a second amplifier in a larger multi-amplifier setup.

Key Features

• Two-Channel Class D Design: Provides efficient power in a compact car-audio amplifier format.
• Flexible Power Configuration: Runs stereo at 2 or 4 ohms, or bridged at 4 ohms.
• Adjustable 12 dB Crossovers: Helps match output frequency range to speakers or subwoofers.
• RCA And High-Level Inputs: Supports aftermarket radios and compatible factory-audio integration.
• Switch-Mode Power Supply: Designed to provide stable amplifier power delivery.
• Protection Status Indicator: LED diagnostics monitor overload and speaker-short protection.

Design & Installation

The CRA-1000.2 has a black compact chassis with an aluminum heat sink using Crunch Quick Thermal Dispersion Technology. Nickel-plated brass connection terminals are designed to resist corrosion, while screw-down connectors provide secure cable attachment. The amplifier is specified with 4 AWG power and ground terminals and 8 AWG speaker terminals.

Mount the amplifier securely in a location with adequate ventilation and do not mount it upside down. Crunch specifies an external 50A fuse and recommends 4-gauge copper power and ground cable for this model. Use RCA inputs when available, or connect the high-level input for source units without RCA outputs; set crossover and level controls to suit the connected speakers and system design.