in sending the product to JI. AUDIO. Freight damage on returns is not covered under warranty. For Service Information in the U.S.A. please call JI. Audio Customer Service: (954) 443-1100 9:00 AM - 5:30 PM (Eastern Time Zone) JL Audio, Inc 10369 North Commerce Pkwy. Miramar, FL 33025 (do not send product for repair