Restore a Finish if applied to dry wood will make scratches stand out, messes up the patina in my experience, and it highlights the pores. You can remedy this by rubbing light coat of lemon oil and wiping off a few mins later, apply 2cd or 3rd lemon oil coats if necessary. Then follow up with the Resore a finish a few days later, you may find that the lemon oil alone does a good enough job and not worry about the stain highlighting defects. I use Formbys lemon oil, it is more expensive but thicker and a little goes along way (can do a receiver with about 1/4 teaspoon). I always clean crude off with murphy wood cleaner (in spray bottle at home depot) until rags are clean before applying anything else, sometimes take 3 or 4 cleanings depending on how neglected they were when I found em.
But no mater what you decide to use, turn the speaker upside down and try on the bottom first. I basically would do sections 4 diff ways (one with just oil, one with restore a finish, one with oil then restore a finish, etc) and let em dry a day then proceed with the rest of the speaker the following day. I learned my lesson after I jumped feet first with restore a finish and ruined a pair of ADS 15 years ago (took sanding and way too much work to get it looking right). Use the natural (non tinted), or the rejuvinator if you must.
