【KICKER LX1250.1 Mono Power Amplifier | Strong yet Fine Subwoofer Sound】

You added a subwoofer, but the bass presence is all that stands out. Or, you want deeper, more powerful bass, but you’re unsure which amplifier to choose.

KICKER LX1250.1 is a mono power amplifier that’s easy to use for subwoofers. It supports up to 1,250W RMS output when connected at 1Ω, and it firmly supports the low frequencies that form the foundation of music.

It’s not just about making the bass louder. By giving your subwoofer some breathing room in its movement, you’ll find it easier to feel the thickness of the bass and the punch of the kick drum. This is an amp that helps keep the bass from sounding thin—not only when you turn the volume up, but even at your usual listening level—while also making it easy to fine-tune with the front speakers in mind.

Features that make it easier to shape the bass to match your music

The LX1250.1 comes with an LXRC remote control that can be installed in the dashboard. Even while driving, you can adjust the subwoofer level right at your fingertips and change how prominent the bass feels depending on the track or your mood.

It also includes a bass correction feature using KICKER’s proprietary SHOCwave2.0™. This is designed to compensate for low frequencies that are often lost within the playback source, bringing out the bass’s depth and thickness. Whether you use it depends on the overall balance of your system, but it’s helpful if you want to expand the expressive capability of your subwoofer.

In addition, it provides the following adjustment/confirmation features:

• Parametric bass boost of 0 to 6dB
• Center frequency adjustable from 20 to 80Hz
• Bandwidth adjustment
• Variable low-pass filter
• Variable subsonic filter
• Gain Match LED to verify gain settings
• Output clipping indicator
• Battery voltage display
• RGB LED brightness and color adjustment

Although this is an amplifier with many features for adding bass, in practice it’s more important to balance the front speakers and the acoustics inside the vehicle than to decide “how far to boost.” If it were me, I’d first connect everything naturally as a whole, then finish using the LX1250.1’s features only as much as needed.

Input design that’s easy to combine with factory audio

The LX1250.1 supports not only low-level inputs, but also high-level signals from 1 to 40V. This makes it easier to plan your system if you want to add a subwoofer amplifier based on your factory audio.

With FIT+™ technology and differential input, the goal is clear signal input while suppressing unnecessary noise. The end result also depends on how you tap the signal on the vehicle side, as well as the power supply and grounding, wiring practices, and gain adjustment.

An amplifier won’t deliver the same sound just because it’s installed. Only after you confirm things like the subwoofer impedance, box volume, installation conditions in the cabin, and the volume balance with the front speakers will the amplifier’s true usability show.

At LOGON, we organize together whether the LX1250.1 is a good match and which type of subwoofer to pair it with, while checking your vehicle’s factory system and your current audio setup. The goal isn’t simply to choose a big amplifier—it’s to produce bass that lets you enjoy the music you listen to every day comfortably.

KICKER LX1250.1 is suited for people like this

• People who want to drive their subwoofer properly
• People who want to enjoy not only the quantity of bass, but also its thickness and punch
• People who want to expand their system while making the most of factory audio
• People who want to adjust the subwoofer level according to the song
• People who are considering future system upgrades
• People who want to consult not just amplifier output, but also installation and tuning

The LX1250.1 is an appealing amplifier for those who want to make the most of its power to drive a subwoofer. However, the optimal configuration varies depending on the vehicle model and your current system. Choosing it while considering a sensible power supply design and how the sound connects in your specific vehicle is the least likely way to regret your choice.

Main Specifications / Specs

【Basic Information】

• Product name: LX1250.1
• Brand: KICKER
• Type: Mono power amplifier
• Type: Class D

【Rated Output RMS (at 14.4V)】

• 1Ω Mono: 1,250W
• 2Ω Mono: 750W
• 4Ω Mono: 400W

【Other Outputs】

• Dynamic power: 1,600W

【Frequency Response】

• 10 to 160Hz (+0 / -1dB)

【S/N Ratio】

• At rated output: 95dB or higher (A-weighted)
• At 1W output: 75dB or higher

【Input Sensitivity】

• High-level input: 1 to 40V
• Low-level input: 125mV to 5V

【Filters】

• Variable low-pass filter
  • 24dB/oct Linkwitz-Riley
  • 40 to 160Hz
• Variable subsonic filter
  • 24dB/oct Linkwitz-Riley
  • 10 to 80Hz

【Bass Adjustment】

• KickEQ+™ parametric bass boost: 0 to 6dB
• Center frequency: 20 to 80Hz
• Bandwidth: 1 to 5

【Main Features】

• Includes LXRC dash remote control
• Gain Match LED
• Output clipping indicator
• SHOCwave2.0™ bass correction feature
• Battery voltage display
• RGB LED accent color
• RGB LED brightness adjustment
• Protection functions for heat, circuitry, and voltage

【Dimensions】

• Height: approx. 6cm
• Width: approx. 21.4cm
• Length: approx. 24cm

If you’re considering adding a subwoofer or swapping out your amplifier, please tell us about your current system and the music you usually listen to. Let’s think together based on your vehicle—including whether a configuration using the LX1250.1 makes sense.

Shop Owner　Komizo