You can buy acoustically transparent cloth from parts express, www.partsexpress.com in white, black and gray, I have done a few acoustats and the grill cloth is only about $7.00- $8.?? a yard or so. There are a few little things you should be aware of, if you don't know already, the sock that is on there now is stapled top and bottom, use a very thin screw driver to remove them, you need to kind of pry them out, once you have the sock off just start a tear at the seem in the back and it will pull apart pretty nicely, just get a seamstress or and one handy to measure it and sew the new cloth as close as possible to the old one. Here is the trick, roll up the new sock so that the seam at the back is straight, then slip the cover over the panel un-rolling as you slip it on, if you do not roll up the new cover they will go on crooked and the seam will not be straight in the back, do you follow. Make sure that you pull the cloth as you are slipping it on and staple one end and then pull the other and I mean a good pull, you will see as you do this the sock will become very taught indeed, hold and staple that end. It's not that hard, just find someone with a sewing machine, that can use it reasonable and the cloth should cost you less than $40.00. Let me know if you have any questions.