Marine Discount Center Item Description • 10W-200W;• 100W recommended amp power ;• 8" polycarbonate woofer;• .5" poly dome tweeter;• Dual voice coils & twin tweeters;• Imp: 8ohm ;• Freq resp: 40Hz-21kHz ;• Sensitivity: 90dB @ 1W/1m ;• Required cutout: 9.5" dia;• Required depth: 3.44";• Each; Shipping Information Items usually ship within 1 business day of cleared payment. If there is an issue with your order, we will notify you through ebay messages Return Information Return Time: You can return most items within the first 30 days from the shipping date. All returned or exchanged items must be in their original box and include packing material, manuals, and all accessories. Customers are responsible for all return shipping costs. International Customers All electrical items are made for US voltage and plugs Customs and import charges are the responsibility of the buyer Warning: This product can expose you to chemicals including lead or di(2-ethylhexyl)phthalate or other chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. ...