I bought some black cloth from a material shop

(tried to think of a better description, but failed!).

It was about

£2.50 per square foot

- so loads less than the

£25 a roll from Halfrauds.

Not quite as stretchy though, but it hides the speakers when you look in the window, and is thin enough not to muffle the sound.

Used a staple gun to cover my MDF speaker holders, but should really have used glue.

hth

Ian