How can I prevent speaker foam surround deterioration or rotting - All for Turntables
How to Repair Your Speaker - Replace the Foam Surround (Refoaming). - do-it-up.com
Amazon.com: Standard 10" Angle-Attach Speaker Foam Surround Repair Kit - 2 Speaker Kit - Fits Several Dozen Different Commonly Used 10" Speakers of Different Brands and Models Whose Foams Match The Measurements :
Speaker Surround Re-Foam Repair Kit For 15" Speaker