Pete: shame, shame, shame, boy.

Yes, rosewood is pricey, but you're building not only speakers that sound great, but furniture that will look georgous if you use quality veneer. Your speakers will be on display for everyone to see for years, so why not do a quality veneer finish? I've never used solid corners, not even cheap oak. I round over the front vertical edges of nearly all my cabinets and wrap veneer around one side, the front and then the other side.