If the experience of learning something new while repairing them for under $7 appeals to you, here are 2 surrounds for 3.5 inch (ca. 9 centimeters) drivers for $6.89 and a 10% off coupon to boot on Amazon. You will need to measure speakers as they have several sizes. I suggest reading the reviews, one person said the surrounds for 3 inch (7.62 cm) drivers were too small for their application.