These have a 10 inch woofer, and both the midrange and woofer are made of poly material. I refoamed these and 1 woofer was damaged at the edge. I have glued it and its working fine. See pictures for a close up. I think the glue will hold for many years. The cabinets are in really nice shape and so are the grills. They are working very well, and priced accordingly for the 1 woofer that was repaired. The item “Acoustic Research AR40 Connoisseur speakers” is in sale since Sunday, July 15, 2018. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “harry398″ and is located in Marlton, New Jersey. This item can’t be shipped, the buyer must pick up the item.