Hi.
I have a pair of paper coned car speakers that are looking and sounding a bit tired. A few years ago I had a car with a similar problem and so I painted the paper cones with a slightly diluted PVA and improved the sound quality really well. Before I do this again is there anything as easily obtainable that would be better. Usually I would replace the pair but these are an oval shape that so far I've been unable to get.
Thanks Andy