Based on the following link, they’re saying it’s trial and error, and mention things to be aware of.
https://speakerrepairshop.nl/en/questions/foam-or-rubber-surrounds/c-9
My impression is that you want to use rubber surrounds so you won’t have to worry about re-foaming in the future. You’ll still have to replace the diffraction pads at some point, so it’s not going to be completely future proof with rubber surrounds.
You haven’t indicated how long you’ve owned these speakers. Do you have a point of reference to how they use to sound with good surrounds?
I think it’s an important question because if you decide to go rubber how will you know if they sound right? What happens if they come back and you don’t like the way they sound, or you do, but after a couple of years the rubber starts to sag a bit due to weight of driver. How will you know if the rubber surrounds are the proper thinness/thickness for these drivers? You’ll be back to where you are today.
If you do use rubber, and decide in the future to sell the speakers, will you inform any potential buyer you had them re-foamed with rubber instead of foam as they were originally?
My recommendation is to just use foam and not worry about it. Chances are, you’ll sell the speakers before they need to be re-foamed again anyway.
https://speakerrepairshop.nl/en/questions/foam-or-rubber-surrounds/c-9
My impression is that you want to use rubber surrounds so you won’t have to worry about re-foaming in the future. You’ll still have to replace the diffraction pads at some point, so it’s not going to be completely future proof with rubber surrounds.
You haven’t indicated how long you’ve owned these speakers. Do you have a point of reference to how they use to sound with good surrounds?
I think it’s an important question because if you decide to go rubber how will you know if they sound right? What happens if they come back and you don’t like the way they sound, or you do, but after a couple of years the rubber starts to sag a bit due to weight of driver. How will you know if the rubber surrounds are the proper thinness/thickness for these drivers? You’ll be back to where you are today.
If you do use rubber, and decide in the future to sell the speakers, will you inform any potential buyer you had them re-foamed with rubber instead of foam as they were originally?
My recommendation is to just use foam and not worry about it. Chances are, you’ll sell the speakers before they need to be re-foamed again anyway.