Apocalypse AAB-500.4D 4-Channel Amplifier
The Apocalypse AAB-500.4D by Deaf Bonce (Alphard Group) is a high-performance, full-range Class-D 4-channel car audio amplifier built for high-SPL (Sound Pressure Level) systems, multi-speaker arrays, and heavy-duty mid-range doors. Designed to combine high thermal efficiency with raw power output, it stands out in the multi-channel market with its rare stability down to 1 Ohm per channel.
Technical Specifications
| Parameter | Specification |
| Model | Apocalypse AAB-500.4D |
| Amplifier Class | Class-D |
| Channels | 4 |
| 1 Ohm RMS Power (14.4 V) | 500 W x 4 |
| 1 Ohm RMS Power (12.0 V) | 450 W x 4 |
| 2 Ohm RMS Power (14.4 V) | 320 W x 4 |
| 4 Ohm RMS Power (14.4 V) | 200 W x 4 |
| 2 Ohm RMS Power (Bridged) | 1000 W x 2 |
| Frequency Response | 15 Hz – 20,000 Hz |
| Minimum Load (Per Channel) | 1 Ohm |
| Minimum Load (Bridged) | 2 Ohm |
| Input Sensitivity (SPL) | 0.5 V – 8 V |
| High Pass Filter (HPF) | 15 Hz – 6,000 Hz |
| Low Pass Filter (LPF) | 50 Hz – 6,000 Hz |
| Crossover Slope | 12 dB/Oct |
| Signal-to-Noise Ratio | ≥ 105 dB |
| Power Input Terminal | 4 Gauge |
| Speaker Output Terminal | 8 Gauge |
| Working Voltage | 9 V – 15 V |
| Dimensions (L × W × H) | 9.72 in × 9.84 in × 2.89 in |
| Gross Weight | 9.48 lbs (4.30 kg) |
Detailed Features & Capabilities
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1-Ohm Low-Impedance Capability: Most standard 4-channel amplifiers are limited to a minimum load of 2 Ohms per channel. The AAB-500.4D is stable down to 1 Ohm per channel, allowing complex parallel speaker wiring setups to maximize power draw from a single unit.
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Wideband Active Crossover Filters: Features High Pass (15 Hz – 6,000 Hz) and Low Pass (50 Hz – 6,000 Hz) filters. The extended range up to 6,000 Hz lets you configure active bandpass crossovers directly on the amplifier for tweeters, mid-range drivers, or horns without needing an outboard digital signal processor (DSP).
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High Efficiency Class-D Architecture: Delivers high output power with reduced current draw and minimal thermal loss, ensuring continuous playback stability during prolonged competition or high-volume usage.
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High Signal Clarity: Achieves a signal-to-noise ratio of ≥ 105 dB across the full 15 Hz – 20,000 Hz audio spectrum, preserving clear playback even at elevated listening levels.
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