The Alpine Type-R SWR-8D4 8" Dual 4 ohm Voicecoil Subwoofer is a rare and powerful addition to any car audio system. With dual voice coils and an RMS power of 350W, this subwoofer delivers exceptional sound quality and depth. Made in China, this model is known for its high performance and durability, making it a sought-after choice for audiophiles looking to enhance their car audio experience. Its compact size of 8 inches makes it easy to install in most vehicles, providing a powerful and immersive listening experience.