Cleaning, polishing Speaker Cabinets ?

It depends what type of finish the speakers are. Are they an open grain wood finish, or a high gloss lacquer? For a gloss finish I recommend an instrument polish like Gerlitz Smudge Off Spray Cleaner, or an automotive detail finisher spray on product. For open grain wood finishes those like Tls49 recommended above should work well.

Paste wax finish just needs dusting cloth and light rub to bring back through shine. You can also apply another coat of paste wax if needed.

+1 Tls49 I also used Howard Feed-N-Wax wouldn't think of using anything else. Best of Luck

I use a citrus based cleaner, then apply bees wax and buff to a nice shine. I find that using a soft dust cloth for the final buffing brings the bees wax to a gloss. Then I check by rubbing my fingertip on the finish to assure all the wax has been polished in. If is see my fingers smudge, that indicates there is still too much wax that hasn't fully polished into the wood. Time consuming but a light dusting when cleaning house with the same soft dust cloth maintains that shine.

As Bill_K says, there is no one product right for all finishes. Currently, most wood veneer finishes are over coated with a catalyzed clear coat that is not going to allow any product to pass through to the wood underneath. So, waxes or automotive type products are going to work fine for clear coated veneer or lacquer surfaces. Most of the time, those oil based wood care products do no good whatsoever. In the rare event you have an open grain or oil finish over wood veneer, then one of the oil based products will actually work.