soo i made a post asking for a request for the thousand year door 2004 restoration fully or just like whatever was changed in the switch version.. thats it, on gamebanana-guess what happens? not only did my post get taken down for alleged "harassment" yes i am being legit not joshing here, they accused me of harassing someone without an ounce of evidence at all in that site.. 1/?
If I'm not mistaken, the 3DS has an option to set the sound output to Mono, Stereo or Surround.
Or you mean like, physically modifying the console to get both channels to one speaker? If so, just solder L and R output to one speaker.