Thanks! I do what I can
The speaker is mounted facing up on a removable curved board wrapped with perforated sheet meal painted to match the finish. Not very elegant - almost looks like an after thought. The speaker cone sure is dirty.
I replaced a whole strip off the back with new veneer. That results in a much cleaner repair than trying to splice in two triangular patches.
I say "new" veneer, but it's really vintage veneer salvaged from a damaged console set.
Trimming off the new veneer with a specialized saw.
It will match much better once stripped and refinished.