Kenwood X503-1 eXcelon Class D Mono Amp (1000W Max • 500W @2Ω • 300W @4Ω) + P-XW1221SHP Single 12" Vented Subwoofer (500W RMS)

Package includes the Kenwood X503-1 eXcelon Class D mono amplifier paired with the Kenwood P-XW1221SHP single 12" subwoofer in a vented enclosure. The amplifier is a compact, high-output Class D unit rated 300W RMS at 4Ω and 500W RMS at 2Ω (1000W max), engineered to deliver tight low-end with minimal heat and space requirements. Signal-shaping features include an infrasonic filter and bass boost control, along with high-quality internal components and advanced filtering to reduce distortion and refine bass response. Installation and connectivity are made easy with a speaker level input harness, wired remote control, and secure terminal connections. The P-XW1221SHP subwoofer is designed for robust, clear bass — it uses a 12" polypropylene cone, stress-controlled spider, dual area cap, and advanced airflow control, and is rated at 500W RMS in its vented enclosure.