Kicker LX500.4 4-Channel Amplifier – 4×125 Watts Full Range
Kicker LX500.4 4-Channel Amplifier – 4×125 Watts Full Range Class-D Amplifier (51LX5004)
- Powerful 4-Channel Performance: The LX500.4 delivers 225W x 4 @ 2Ω and 450W x 2 @ 4Ω bridged, providing clean, high-output power for your speakers with precision and clarity.
- Advanced System Control with LXCC: The included LX Control Center (LXCC) allows real-time monitoring of battery voltage, amp temperature, protection status, and gain adjustments for precise tuning and optimized performance.
- High-Efficiency Class-D Technology: Designed for lower power consumption, reduced heat output, and extended playtimes, ensuring reliable performance without sacrificing sound quality.
- Crystal-Clear Sound with FIT+ Technology: Eliminates unwanted noise and interference while accepting high- and low-level signals up to 40V, delivering distortion-free audio even in complex installations.
- Customizable Look and Built-in Protections: Features a reversible center panel with 11 RGB LED accent colors, multiple turn-on modes, and comprehensive protection against thermal, circuit, and voltage instability for long-lasting reliability.
| SKU: | B0DSLSKD7T |
Product Description





User Adjustable RGB Backlighting
Color Selection
- Pressing button #1 will cycle form all the available RGB backlighting option.
LED Brightness
- Pressing button #2 will cycle from multiple LED lighting intensities, including OFF.
Reset
- Pressing button #3 will reset RGB color and intensity to KICKER factory default.
KICKER 51LX5004 LX Series Premium Four Channel Class D Full Range Amplifier, … | KICKER 51LX12005 LX Series Premium Five Channel Class D Amplifier, 1200 Watts… | KICKER 51LX13007 LX Series Premium Seven Channel Class D Amplifier, 1300 Watt… | |
|---|---|---|---|
| Price | $599.99 | $849.99 | $949.99 |
| RMS Power @ 14.4 Volts DC, 1-Ohm | 850 | 1250 | 1650 |
| Dynamic RMS Power @ 14.4 Volts DC, 1-Ohm | 1100 | 1600 | 2200 |
| 1 Ohm Stable | ✓ | ✓ | ✓ |
| LXRC Remote Bass Controller Included | no data | ✓ | ✓ |
| LXCC Control Center Included | ✓ | ✓ | ✓ |
| FIT+ Input – Up to 40 volt input signal | ✓ | ✓ | ✓ |
| Start/Stop Technology Equipped | ✓ | ✓ | ✓ |
| RCA Output Pass Through | ✓ | no data | no data |
| DC Offset Turn-On | ✓ | ✓ | ✓ |
| Adjustable RGB LED Lighting | ✓ | ✓ | ✓ |
51LX Series Premium Multichannel Amplifiers
| FIT+ Low Level Range | 125mV – 5V |
| FIT+ High Level Range | 1V – 40V |
| DC Voltage Operating Range | 6.5 – 16.5 Volts DC |
| Signal To Noise | >95dB, a-weighted, referenced to rated power |
| Impedance Operation Range | 2 – 4 Ohms Full Range Channels, 1 – 4 Ohms Subwoofer Channels |
| Low Pass Crossover | Variable 24 dB/Octave, 40Hz – 5kHz (Amp 1, 2, 3) (Bandpass Capability) |
| High Pass Crossover | Variable 24 dB/Octave, 5kHz – 20kHz (Amp 1, 2, 3) (Bandpass Capability) |
| Subwoofer Low Pass Crossover | Variable 24 dB/Octave, 40Hz – 160 Hz (LX13007 & LX12005) |
| Subwoofer Subsonic Filter | Variable 24 dB/Octave, 10Hz – 80Hz (LX13007 & LX12005) (Infrasonic Filter) |
| Under Voltage Protection | < 6.5 Volts DC, Warning @ 10.5 Volts |
| Over Voltage Protection | > 16.5 Volts DC, Warning @ 16 Volts |
| Active Thermal Management | Temperature > 167 Degrees Fahrenheit (75 Degrees Celsius) |
| Short Circuit Protection | Amplifier Turn-Off When Speaker Wire Short Detected |







KICKER 51LX5004 LX Series Premium Four Channel Class D Full Range Amplifier, …
KICKER 51LX12005 LX Series Premium Five Channel Class D Amplifier, 1200 Watts…
KICKER 51LX13007 LX Series Premium Seven Channel Class D Amplifier, 1300 Watt…