Considering the thinness of the wood veneer on most speakers, I would doubt it would have any effect on sound as it aged. However, those few speakers with solid wood enclosures (as opposed to mdf or synthetic ones) most certainly should age, in theory. Interesting question...
Dumb question..but just wondering ?????
I have a pair of speakers that are manufactured by one of the higher end companies and paid extra for the cherry finish. I have used Fornby's oil and or polish on them about once a month or so since I bought them 6 years ago. They have obviously darkened through the years and look absolutely beautiful....So, my question is....does the wood ''age'' as the years go by and add their own sound? I guess my analogy would be guitars and violins get better with age.....does the same hold true for the wood on speakers ?