Description
Description
The ARC Audio X2 600.4 is a high-performance four-channel Class-D amplifier designed for systems that need clean power, compact dimensions, and flexible configuration options. Its impedance-switching output stage delivers the same 150 watts per channel into either 4-ohm or 2-ohm loads, allowing the amplifier to maintain consistent rated output across a wide range of speaker systems.
The four channels can power coaxial speakers or passive component systems, operate in an externally crossed bi-amplified system, or feed a DSP-controlled active system. The channel pairs can also be bridged, allowing the X2 600.4 to operate as a three-channel amplifier with two speakers and a subwoofer or as a high-output two-channel amplifier for specialty drivers and midbass speakers. An adjustable band-pass crossover section provides additional control for more advanced system layouts.
Balanced differential inputs support aftermarket low-level sources and factory-audio integration, including speaker-level signals through the supplied input pigtails. The Level 2 cosmetic package uses a brushed silver hairline aluminum top panel, an illuminated rotatable acrylic badge, and front diagnostic indicators for a clean installation and easier troubleshooting.
Specifications
| Amplifier Class | Class D |
|---|---|
| Channels | 4 |
| Rated Power at 4 Ohms | 150 watts RMS × 4 |
| Rated Power at 2 Ohms | 150 watts RMS × 4 |
| Bridged Power at 4 Ohms | 300 watts RMS × 2 |
| Minimum Load | 2 ohms stereo / 4 ohms bridged |
| Frequency Response | 20 Hz–20 kHz |
| Channels 1/2 High-Pass Crossover | 10 Hz–1 kHz at 12 dB/octave |
| Channels 1/2 Low-Pass Crossover | 50 Hz–3 kHz at 12 dB/octave |
| Channels 3/4 High-Pass Crossover | 50 Hz–3 kHz at 12 dB/octave |
| Band-Pass Capability | Adjustable crossover configuration for advanced system layouts |
| Bass Boost | 0–9 dB at 45 Hz on channels 1/2 |
| Remote Level Control | Included |
| Input Sensitivity | 200 mV–3.5 V |
| Input Stage | Balanced differential |
| Automatic Turn-On | Signal detect, DC detect, or remote turn-on |
| Fusing | 2 × 30-amp ATC/ATO |
| Dimensions | 9.020 × 6.268 × 2.162 inches |
| Start/Stop Compatibility | Yes; operates below 8 volts |
| Cosmetic Package | Level 2 with brushed silver hairline aluminum top and illuminated badge |
Features
- Four-channel full-range Class-D amplifier
- Impedance-switching output stage with equal rated power at 2 and 4 ohms
- Bridgeable channel pairs for two- or three-channel system configurations
- Adjustable crossover system with band-pass capability
- Suitable for passive, bi-amplified, DSP-active, and bridged system layouts
- Balanced differential inputs for aftermarket and OEM integration
- Speaker-level input capability through supplied RCA input pigtails
- Two-channel or four-channel input selection
- Signal-sensing and DC-detect automatic turn-on
- Microprocessor-controlled diagnostic fault reporting
- Remote level control included
- Compact installer-focused chassis
- Brushed silver hairline aluminum top panel
- Illuminated rotatable acrylic badge and front diagnostic indicators