Kenwood X503-1221D X503-1 Mono Amplifier & P-XW1221D 12" Dual Subwoofer

Kenwood X503-1221D X503-1 Mono Amplifier & P-XW1221D 12" Dual Subwoofer System

Unleash thunderous bass and unmatched clarity in your car audio setup with the Kenwood X503-1221D package. This all-in-one solution pairs the high-efficiency Kenwood eXcelon X503-1 Class D Mono Amplifier with the powerful P-XW1221D dual 12-inch subwoofer enclosure. Engineered to deliver deep, clean, and distortion-free low frequencies, this system is ideal for drivers who want their music to not just be heard, but felt. Whether you listen to hip-hop, EDM, rock, or heavy bass tracks, this Kenwood package ensures your audio system performs at competition-grade levels. It’s a perfect fit for SUVs, sedans, and trucks that demand powerful sound with flexible installation options.

Key Features

• Complete Bass Package - Includes Kenwood X503-1 Class D Mono Amplifier and P-XW1221D Dual 12” Subwoofer Enclosure.
• Massive Power Output - Amplifier delivers 1000W peak and 500W RMS at 2 ohms, while the subwoofer enclosure handles 2000W peak and 600W RMS combined.
• Crystal Clear Low-End - Designed to reproduce powerful low frequencies with accuracy and impact, ideal for bass-heavy music lovers.
• Compact Class D Amplifier - Small footprint with big power output, efficient design reduces heat and increases reliability.
• Customizable Sound - Adjustable low-pass filter, bass boost, and infrasonic filter for precise tuning and optimized performance.
• Rugged Subwoofer Enclosure - 5/8” MDF with 3/4” baffle construction and steel mesh grilles for long-lasting durability.
• Flexible Mounting Options - Slant-back design supports forward, rear, or down-firing configurations for different vehicles.
• Superior Heat Dissipation - Closed yoke with advanced airflow control enhances thermal management and protects components.
• Wired Remote Control - Convenient bass level adjustments right from the driver’s seat.

Specifications

• Amplifier Type: Class D Mono Amplifier
• Amplifier Power: 1000W Max, 500W RMS (2Ω), 300W RMS (4Ω)
• Amplifier Dimensions: 8-3/8" W x 2-1/16" H x 5-7/8" D
• Subwoofer Size: Dual 12" Injection Polypropylene Cones with X-Motif Diamond Array Pattern
• Subwoofer Power: 2000W Peak, 600W RMS
• Impedance: 2Ω enclosure, 2Ω/4Ω amplifier compatibility
• Frequency Response: 31Hz - 300Hz
• Sensitivity: 88 dB
• Signal-to-Noise Ratio: 85 dB
• Special Features: Infrasonic Filter, Bass Boost, Stress-Controlled Spider, Down-Firing Capability
• Construction: 5/8” MDF with 3/4” MDF baffle, steel mesh grilles included

Why This System Stands Out

The Kenwood X503-1221D amplifier and subwoofer combo is more than just loud — it’s precise, durable, and built to last. The amplifier’s advanced circuitry uses polymer multi-layer capacitors and coil shielding to deliver a clean, noise-free signal, while the dual subwoofers hit hard with tight, controlled bass. This system eliminates distortion even at high volumes, making it perfect for those who demand deep bass for car audio that competes with high-end custom builds. Its rugged enclosure design, multiple installation possibilities, and heat-resistant components ensure reliable performance for years to come. Whether you’re upgrading a factory system or building a serious car audio setup, this package delivers unmatched performance in its class.

About Kenwood

Kenwood has long been recognized as a leader in the car audio industry, known for its premium amplifiers, subwoofers, and head units that combine durability, advanced engineering, and superior sound quality. The eXcelon series represents Kenwood’s top-tier performance line, built for audiophiles who want maximum sound quality and reliability on the road. When you choose Kenwood, you’re investing in a trusted name that stands for precision, innovation, and world-class sound reproduction.