Kenwood X503-1221SHP X503-1 Mono Amplifier & P-XW1221SHP 12" Loaded Subwoofer

Kenwood X503-1221SHP X503-1 Mono Amplifier & P-XW1221SHP 12" Loaded Subwoofer

The Kenwood X503-1221SHP bundle combines the powerful eXcelon X503-1 Class D Mono Amplifier with the precision-engineered P-XW1221SHP 12" Ported Subwoofer Enclosure, delivering a complete solution for anyone seeking deep, accurate bass and reliable amplification. Designed for high performance and durability, this kit is perfect for enthusiasts who want to upgrade their car audio system with professional-level sound quality.

Key Features - Amplifier (X503-1)

• Class D Mono Design - Efficient, compact, and capable of delivering up to 1000W peak power.
• RMS Power Handling - 300W RMS at 4Ω / 500W RMS at 2Ω for flexible system setups.
• Variable Low Pass Filter - Allows precise tuning for optimized bass response.
• Bass Boost & Infrasonic Filter - Enhance low frequencies while eliminating distortion below 25Hz.
• Wired Remote Control Included - Easily adjust subwoofer volume from the driver’s seat.
• One-Sided Connection Design - Streamlined installation with all terminals on one side.
• Output Coil with Magnetic Shield - Reduces noise and ensures cleaner, distortion-free sound.
• High-Quality Capacitors (PMLCAP) - Reduces distortion for precise and detailed bass reproduction.

Key Features - Subwoofer (P-XW1221SHP)

• 12" High-Power Subwoofer - Peak power of 2000W and RMS 500W for deep, impactful bass.
• Dual Area PP Cone Cap - Delivers rigid performance and accurate bass reproduction.
• Stress Controlled Spider - Enhances mechanical durability and ensures long-lasting performance.
• Closed Yoke with Advanced Airflow Control - Superior thermal management system for reliable output.
• Slant Back Design - Fits behind SUV rear seats and minimizes standing wave issues.
• Multiple Mounting Options - Forward, rear, or down-firing flexibility.
• 3/4" MDF Baffle Construction - Rigid, durable build for accurate sound at high volume.
• Enhanced Down-Firing Support - Maintains stability while maximizing low-frequency energy.
• Reduced Port Noise - Rounded port design ensures smoother airflow and minimal distortion.

Specifications

• Amplifier Power - 1000W Max / 500W RMS @ 2Ω / 300W RMS @ 4Ω
• Subwoofer Power - 2000W Peak / 500W RMS
• Frequency Response - 30Hz - 300Hz
• Impedance - 2Ω or 4Ω
• Sensitivity - 79 dB
• Signal-to-Noise Ratio - 85 dB
• Subwoofer Size - 12 Inch
• Construction - 5/8" MDF enclosure with 3/4" thick front baffle

The Kenwood X503-1221SHP amplifier and subwoofer package is built for serious bass lovers. The amplifier ensures clean, controlled, and efficient power delivery, while the high-output subwoofer enclosure delivers rich, dynamic bass. With advanced thermal management, precision tuning options, and durable construction, this system is designed to elevate your in-car audio experience with authority and reliability.

About Kenwood

Kenwood is a global leader in car audio, known for combining cutting-edge technology with durability and superior performance. The eXcelon line represents the pinnacle of Kenwood engineering, offering audiophiles and car enthusiasts professional-grade sound reproduction and reliability that stands the test of time.