Question on speaker grill repair

[vintage 5.0]

I have a pair of sonus faber minuetto speakers. The cabinets and everything are in great shape. The grills have faded some due to prior owner letting them sit near sun light. Has anyone redone speaker grills and if so where do you get the cloth. Is there a good place to get it. These are not perfectly square and have two curved edges on them. Is this hard to do.

 

[teal'c]

https://www.joann.com/utility-fabric-black-speaker-cloth/3514023.html

 

[WillVT]

That Joann speaker cloth is nice. I redid my Rectilinear IIIs with it. If your speakers have a grill frame, it's easy. The fabric has a nice stretch to it. I cut it to about an inch or two larger than the frame, folded it around the back, and glued it. I think I used glue-all.