W450 “Standard” speaker dashboard source

Hello together πŸ™‚ I have here an early W450 who longs to be brought back by me slowly (far too slow) in proper condition. Unfortunately the left “speaker” on the dashboard is in the bucket. It is not a sound system or similar installed, that I would like to tackle next year when the interior is renovated. It only bothers very much that the bit “sound” comes only from the right front mini part πŸ™‚ Question: -> How do I get to such a speaker promptly and cheaply? So the technical part, the “Bobbl” is present, he just doesn’t speak to me πŸ™‚ Thank you πŸ™‚