Never used, still boxed. Brand: Pioneer Rf molded curved cabinet 4" Structured surface woofer 1" High efficiency soft dome tweeter Speaker type Tweeter, Bookshelf Recommended uses for product: Home Theater Subwoofer diameter: 4 Inches Mounting type: Shelf Mount Size: 7-1/8” x 12-9/16” x 8-7/16” Weight: 9 lbs 2 oz