Hi @jt57

There doesn't seem to be much available in the way of spare parts for the tablet.

The best I can suggest is that you open the tablet and check if there is any identifying information e.g. part number on the speaker itself.

Looking at the image in Step.9 of the ifixit Google Pixel Slate Speaker Replacement guide, there is a label on the speaker cable which shows "Left" ( for obvious reasons) but hopefully there may be something printed on the other side, whilst at the other end of the speaker there is a 4 wire ribbon cable which also has info on it at the speaker end but it is too small for me to make out what it says, even when zoomed in.

If there is any information try searching online using the information to see what results you get