This is anAR 12 inch woofer The surrounds we’re just replaced and speaker work perfect The number of the speaker is 200003-1. I do have a pair if you need a pair. The item “Acoustic research 12 Inch Woofer/AR-9, 90, 91, 98ls” is in sale since Monday, January 25, 2016. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “buyme222″ and is located in Franklin Square, New York. This item can be shipped to United States.