Kicker LX500.4 4-Channel Amplifier

The KICKER LX-Series combines high-performance sound quality (SQL) with powerful output, designed based on industry feedback to include the most sought-after features. These multi-channel amplifiers are fully bridgeable and come equipped with the LX Control Center (LXCC) for precision adjustments.

Engineered for Excellence
The LX-Series represents KICKER’s premium high-power amplifier line, designed from the ground up for superior performance, durability, and flexibility.

• LX Control Center Included – Fine-tune your system with precision.
• Class-D Efficiency – Lower current draw, extended playtime, and reduced operating temperatures.
• Gain-Match LEDs – Ensure perfect gain settings for optimal audio quality.
• Customizable Aesthetics – A reversible center panel and 11 RGB LED accent color options.
• Advanced FIT+™ Technology – Accepts both low- and high-level signals up to 40V with full differential inputs to eliminate unwanted noise.
• Versatile Turn-On Modes & Protection Features – Ensuring thermal, circuit, and voltage stability for reliable performance.

LX Control Center (LXCC) – Total System Management

• Real-Time Diagnostics – Monitor battery voltage, LED output clipping, amplifier temperature, and protection status.
• Precision Tuning – Adjust gain trim, left-channel time delay, and customize crossover settings (HP, LP, or BP) with selectable slope and frequency.
• Integrated 3.28 ft (1m) Cable – Directly connects to the amplifier for seamless control.

The KICKER LX500.4 delivers high-powered performance with cutting-edge features, making it the ultimate amplifier for your audio system.

Specifications
RMS Power [Watts/Channel] @ 14.4V:
    2Ω Stereo: 225 x 4
    4Ω Stereo: 125 x 4
    4Ω Bridged: 450 x 2
Dynamic Power [Watts]: 1100
Frequency Response [Hz]: 20–20k
Signal-to-Noise Ratio: (a-weighted, re: rated power): >95dB
Signal-to-Noise Ratio (ref: 1W output): >75dB
Dimensions [in]: Height: 2-3/8 x Width: 8-7/16 x Length: 9-7/16
Input Sensitivity: High level 1V–40V | Low level 125mV–5V
Variable Electronic Crossover:
    24dB/octave Linkwitz-Riley
    Each channel pair Off/HP/LP/BP:
    HP: 20–5kHz
    LP: 40–5kHz
    Selectable Topology: 12, 18, or 24dB/oct Butterworth;
    12 or 24dB/oct Linkwitz-Riley KickEQ+™: Not applicable for LX500.4 (no sub channel)

Kenwood eXcelon X302-4 4-Channel Amplifier

• 4-channel Class D car amplifier
  • 50 watts RMS x 4 at 4 ohms (75 watts RMS x 4 at 2 ohms)
  • 150 watts RMS x 2 bridged at 4 ohms (4-ohm stable when bridged)
• variable high- and low-pass filters (50-200 Hz, 12 dB/octave)
• variable bass boost on B channels (0-18 dB at 40 Hz)
• preamp and speaker-level inputs

Alpine KTA-450 4-Channel Power Pack Amplifier with PowerStack Capability

Features

TECH SPECS

Award-winning Powerstack Compatibility
The KTA-450 can mount behind select Alpine 2-DIN mech-less head units, like the iLX-W650, using the included bracket. The KTA-450’s recessed harness receptacle allows the wiring to fold between it and the head unit so both products fit in a standard 2-DIN space. This PowerStack design is a 2019 CES Innovation Awards winner and makes the duo one of the most powerful 2-DIN radios available. Exclusive Amplifier Technology, Dynamic Peak Power (DPP)
The KTA-450 features Alpine’s exclusive Dynamic Peak Power (DPP). DPP intelligently adjusts the gain to adapt to musical needs. DPP prevents the KTA-450 from clipping by supplying up to double the power for sudden, dynamic sounds. DPP ensures music sounds the way it should at high volumes and boosts the KTA-450 to 400 watts DPP, doubling its power without increasing its size. Compact Size For Hidden Installation Applications
The KTA-450 measures just 7” W x 3.5” H x 1.25” D. For vehicles that do not have the space for a traditional amplifier, the KTA-450’s small size allows it to be tucked away in hidden areas such as in the glove box or behind the radio. It could even be used in a motorcycle’s saddlebag or on a boat. Simple Installation For Use With Any Radio
Thanks to the efficient power needs of the DPP technology, the KTA-450 does not require a new power supply wire at the battery, so installation is fast using the supplied radio power wires. In addition, the KTA-450 uses a 22-pin power harness with a recessed design on one side, so the cables can be tucked-in for a cleaner, less-bulky installation.

• Alpine’s Class D Amplifier Circuit with Dual Post-Filter Feedback Loops
• CTA-2006-B Power Rating: 100W RMS x 4 (4ohm, 14.4V ≤ 1% THD+N); 150W RMS x 4 (2ohm, 14.4V≤ 1% THD+N)
• Bridged: 300W x 2 (4ohm, 14.4V, ≤1% THD+N)
• S/N ratio: >85dB (ref: 1W into 4 ohm), 106dB (at rated power)
• THD+N ≤0.03% (ref: 1W into 4 ohm)

JL Audio JD400/4 400 Watt 4-Channel Full-Range Class D Amplifier

The JD400/4’s controls can be found on the input panel of the amplifier, with all speaker and power connections located along the opposite end of the extruded aluminum chassis. Signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting line-level or speaker-level signals. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment.

Onboard LED-clipping indicators are also included surrounding each input sensitivity control. This convenient feature lets you set your amplifier’s input sensitivity, quickly and accurately, without special equipment. You will also find a set of buffered, pass-through preamp outputs on-board, so you can pass signals to another amplifier.

Specifications