Product Details Description: The 5 Core 8 inch Dual 4 Ohm Subwoofer is a compact powerhouse, delivering exceptional performance with a 500-watt RMS and 1,000-watt max power rating. Designed for both daily use and competition, it features a 2-inch TSV copper voice coil, dual Y30-grade magnets, and a durable aluminum frame for superior heat dissipation. The high-quality paper cone and rubber surround ensure precise, resonant lows across a wide frequency range (F0-800 Hz). With silver-plated terminals and a robust build, this subwoofer combines reliability, power, and clarity, making it the perfect choice for audio enthusiasts who demand top-tier performance in a compact design. 1: HIGH SENSITIVITY - 85 ±3dB delivers loud and clear bass with minimal power consumption, making it ideal for both compact and high-powered setups. 2: OPTIMIZED COOLING SYSTEM - The TSV copper voice coil and vented design prevent overheating, ensuring consistent performance during extended use. 3: UNIVERSAL FIT - Designed to fit various enclosures, including sealed, ported, and bandpass boxes, allowing maximum flexibility for your audio setup. 4: DURABLE BUILD - Features a rugged aluminum frame and rubber edge, offering enhanced durability and ensuring consistent performance. Specifications: Size: 8 inch | Power: 500W RMS / 1000W Max Impedance: 4+4 Ohm | Frequency: F0-800 Hz Voice Coil: 2” TSV Copper | Sensitivity: 85dB ±3dB Magnet: Y30, 40 OZ, 140x40mm (2 pcs) Edge: Rubber | Cone: Paper | Mounting Depth: 128mm Basket: Aluminum | Terminal: Silver Package Includes: 1x Subwoofer | 5 Core | | 8 Inch Car Audio Subwoofer Dual 4Ohm 1000W Speaker Sub Woofer Driver Aluminum Frame | Black | Best Buy