48PXA12501 KICKER PXA 1250W RMS Waterproof Powersports Mono Subwoofer Amplifier IP67

Powerful Bass Built for Powersports

Bring serious subwoofer power to your UTV, motorcycle, golf cart, or custom vehicle with the KICKER 48PXA12501 PXA 1250.1 mono amplifier. Designed for demanding powersports environments, this compact Class-D amplifier delivers up to 1250 watts RMS at 1 ohm, giving high-performance subwoofer systems the power they need without requiring a traditional full-size car-audio amplifier.

The PXA series features an IP66/IP67-certified waterproof design to help protect the amplifier against dust and water exposure. Its sealed construction makes it a practical choice for installations where weather and environmental conditions are important considerations.

With power options for 4-ohm, 2-ohm, and 1-ohm subwoofer loads, the 48PXA12501 offers flexibility when building a custom bass system. It also features dual 8-gauge power and ground inputs, with included adapters that allow 1/0-gauge connections for installations requiring larger-gauge wiring.

Whether you're upgrading a UTV sound system, adding bass to a motorcycle, or building a powerful custom powersports audio setup, the KICKER PXA 1250.1 combines substantial output with a rugged, space-conscious design.

Key Features

• 1250W RMS at 1 ohm for powerful mono subwoofer performance

• 1650W Audio Precision dynamic power at 1 ohm, as specified for this model

• IP66/IP67-certified waterproof amplifier design for demanding outdoor environments

• High-efficiency Class-D technology delivers substantial output in a compact chassis

• Flexible power output with 450W RMS at 4 ohms and 800W RMS at 2 ohms

• Dual 8-gauge power and ground inputs with adapters for 1/0-gauge connections

• 15Hz subsonic filter with a 24dB Linkwitz-Riley slope to help limit extremely low-frequency signals

• PXA-series compact chassis shares the size of the KICKER PXA 1000.5 amplifier

• Included 3mm hex key for installation-related hardware

• Designed for UTVs, golf carts, motorcycles, and other custom or space-conscious vehicle audio installations

Technical Specifications

Approximate Chassis Dimensions

Based on the published dimensions of the PXA 1000.5 chassis:

• Length: 12-7/8 inches

• Width: 4-1/2 inches

• Height: 1-15/16 inches

Confirm final mounting dimensions against the 48PXA12501 manufacturer documentation before publishing or planning a tight installation.

Waterproof Design and Installation Notes

The KICKER PXA series uses sealed construction intended for outdoor and powersports applications. Its IP66 rating covers protection against powerful water jets, while IP67 testing covers temporary immersion in water up to one meter deep for 30 minutes under specified test conditions.

Important: The IP66/IP67 certifications do not apply to the power and ground wire couplers. Proper installation, sealed connections, and routing remain important for long-term reliability. Waterproof ratings should not be interpreted as a guarantee that every connection or the complete installed audio system can be submerged.

Pro Audio Center Tip

For the best results, match the 48PXA12501 to a subwoofer system that can handle the amplifier's available RMS power at the final wired impedance. This amplifier is rated for loads down to 1 ohm, so verify your subwoofer voice-coil configuration and wiring before connecting it.

Use properly sized power and ground wiring, appropriate fuse protection, secure connections, and adequate installation clearance. For a powersports build, protecting and routing wiring correctly is just as important as choosing the right amplifier.

Installation Notes

• Minimum impedance: The amplifier is rated for operation down to 1 ohm. Do not connect a subwoofer load below its specified minimum.

• Power connections: The amplifier has dual 8-gauge power and ground inputs. Included adapters allow 1/0-gauge connections. Follow the manufacturer’s wiring instructions when selecting and installing power cable.

• Waterproof rating: The PXA series carries IP66/IP67 certifications. These ratings do not apply to the wire couplers, so connections and wiring must be installed and protected correctly.

• Mounting location: Select a secure location with sufficient room for the amplifier, wiring, and service access. Follow the manufacturer’s mounting and clearance instructions.

• Subsonic filter: The listed 15Hz, 24dB Linkwitz-Riley subsonic filter helps reduce extremely low-frequency signals reaching the subwoofer.

• System setup: Match amplifier output to subwoofer power handling, confirm final impedance, and set gain carefully to avoid clipping and excessive heat.

Frequently Asked Questions

How much power does the KICKER 48PXA12501 produce?

It delivers 450W RMS at 4 ohms, 800W RMS at 2 ohms, and 1250W RMS at 1 ohm. Its listed Audio Precision dynamic power rating is 1650W at 1 ohm.

Is the KICKER 48PXA12501 waterproof?

The PXA series is certified to IP66 and IP67 standards for protection against dust and water exposure. The certifications do not apply to the wire couplers, so correct installation and connection protection remain important.

What vehicles can use this amplifier?

The PXA series is designed for compact and powersports installations, including UTVs, golf carts, motorcycles, and custom vehicles. Confirm that the installation space, electrical system, and intended subwoofer configuration are suitable.

Can this amplifier power a 1-ohm subwoofer system?

Yes. The 48PXA12501 is rated for 1250W RMS at a 1-ohm final load. Confirm the subwoofer’s wiring configuration and RMS power handling before installation.

What size power wire does it use?

It has dual 8-gauge power and ground inputs, with adapters that allow 1/0-gauge connections. Follow the manufacturer’s instructions for the appropriate wiring and fuse protection for your installation.

Is the CXARC remote bass control included?

The CXARC is a relevant optional accessory sold separately for compatible KICKER amplifiers. 

What does the 15Hz subsonic filter do?

It helps reduce very low-frequency signals below the useful operating range of many subwoofer and enclosure combinations. This can help control excessive cone movement, depending on the enclosure and subwoofer design.