I have four Usher 1001B 10" woofers for sale. These units are new. Parts-Express sells them for US$150. Asking $60 each. Can provide a matched pair. Check the Parts-Express web listing for woofer specs. Contact me directly at audioltd@metrocast.net. Accept PayPal or bank check.
I have a used pair of these in excellent condition. I would do $160 shipped in the lower 48.